diff --git a/core/src/main/java/org/jruby/RubyArray.java b/core/src/main/java/org/jruby/RubyArray.java
index a9e6adf2725f..862545b3a8f7 100644
--- a/core/src/main/java/org/jruby/RubyArray.java
+++ b/core/src/main/java/org/jruby/RubyArray.java
@@ -645,7 +645,7 @@ public IRubyObject initialize(ThreadContext context, Block block) {
         unpack();
         realLength = 0;
         if (block.isGiven() && context.runtime.isVerbose()) {
-            context.runtime.getWarnings().warning(ID.BLOCK_UNUSED, "given block not used");
+            context.runtime.getWarnings().warn(ID.BLOCK_UNUSED, "given block not used");
         }
         return this;
     }
@@ -2549,7 +2549,7 @@ public IRubyObject index(ThreadContext context, IRubyObject obj) {
 
     @JRubyMethod(name = {"index", "find_index"})
     public IRubyObject index(ThreadContext context, IRubyObject obj, Block unused) {
-        if (unused.isGiven()) context.runtime.getWarnings().warning(ID.BLOCK_UNUSED, "given block not used");
+        if (unused.isGiven()) context.runtime.getWarnings().warn(ID.BLOCK_UNUSED, "given block not used");
         return index(context, obj);
     }
 
@@ -2656,7 +2656,7 @@ public IRubyObject rindex(ThreadContext context, IRubyObject obj) {
 
     @JRubyMethod
     public IRubyObject rindex(ThreadContext context, IRubyObject obj, Block unused) {
-        if (unused.isGiven()) context.runtime.getWarnings().warning(ID.BLOCK_UNUSED, "given block not used");
+        if (unused.isGiven()) context.runtime.getWarnings().warn(ID.BLOCK_UNUSED, "given block not used");
         return rindex(context, obj);
     }
 
@@ -3521,7 +3521,7 @@ public IRubyObject count(ThreadContext context, Block block) {
 
     @JRubyMethod(name = "count")
     public IRubyObject count(ThreadContext context, IRubyObject obj, Block block) {
-        if (block.isGiven()) context.runtime.getWarnings().warning(ID.BLOCK_UNUSED, "given block not used");
+        if (block.isGiven()) context.runtime.getWarnings().warn(ID.BLOCK_UNUSED, "given block not used");
 
         int n = 0;
         for (int i = 0; i < realLength; i++) {
@@ -4929,7 +4929,7 @@ public IRubyObject all_pCommon(ThreadContext context, IRubyObject arg, Block blo
         boolean patternGiven = arg != null;
 
         if (block.isGiven() && patternGiven) {
-            context.runtime.getWarnings().warning(ID.BLOCK_UNUSED, "given block not used");
+            context.runtime.getWarnings().warn(ID.BLOCK_UNUSED, "given block not used");
         }
 
         if (!block.isGiven() || patternGiven) return all_pBlockless(context, arg);
@@ -4972,7 +4972,7 @@ public IRubyObject any_pCommon(ThreadContext context, IRubyObject arg, Block blo
         boolean patternGiven = arg != null;
 
         if (block.isGiven() && patternGiven) {
-            context.runtime.getWarnings().warning(ID.BLOCK_UNUSED, "given block not used");
+            context.runtime.getWarnings().warn(ID.BLOCK_UNUSED, "given block not used");
         }
 
         if (!block.isGiven() || patternGiven) return any_pBlockless(context, arg);
@@ -5014,7 +5014,7 @@ public IRubyObject none_pCommon(ThreadContext context, IRubyObject arg, Block bl
         boolean patternGiven = arg != null;
 
         if (block.isGiven() && patternGiven) {
-            context.runtime.getWarnings().warning(ID.BLOCK_UNUSED, "given block not used");
+            context.runtime.getWarnings().warn(ID.BLOCK_UNUSED, "given block not used");
         }
 
         if (!block.isGiven() || patternGiven) return none_pBlockless(context, arg);
@@ -5056,7 +5056,7 @@ public IRubyObject one_pCommon(ThreadContext context, IRubyObject arg, Block blo
         boolean patternGiven = arg != null;
 
         if (block.isGiven() && patternGiven) {
-            context.runtime.getWarnings().warning(ID.BLOCK_UNUSED, "given block not used");
+            context.runtime.getWarnings().warn(ID.BLOCK_UNUSED, "given block not used");
         }
 
         if (!block.isGiven() || patternGiven) return one_pBlockless(context, arg);
diff --git a/core/src/main/java/org/jruby/RubyEnumerable.java b/core/src/main/java/org/jruby/RubyEnumerable.java
index 1718be70cc69..334a3468520c 100644
--- a/core/src/main/java/org/jruby/RubyEnumerable.java
+++ b/core/src/main/java/org/jruby/RubyEnumerable.java
@@ -163,7 +163,7 @@ public static IRubyObject count(ThreadContext context, IRubyObject self, final I
         final Ruby runtime = context.runtime;
         final SingleInt result = new SingleInt();
 
-        if (block.isGiven()) runtime.getWarnings().warning(ID.BLOCK_UNUSED , "given block not used");
+        if (block.isGiven()) runtime.getWarnings().warn(ID.BLOCK_UNUSED , "given block not used");
 
         each(context, eachSite(context), self, new JavaInternalBlockBody(runtime, context, "Enumerable#count", Signature.ONE_REQUIRED) {
             public IRubyObject yield(ThreadContext context1, IRubyObject[] args) {
@@ -690,7 +690,7 @@ public static IRubyObject find_index(ThreadContext context, IRubyObject self, fi
     public static IRubyObject find_index(ThreadContext context, IRubyObject self, final IRubyObject cond, final Block block) {
         final Ruby runtime = context.runtime;
 
-        if (block.isGiven()) runtime.getWarnings().warning(ID.BLOCK_UNUSED , "given block not used");
+        if (block.isGiven()) runtime.getWarnings().warn(ID.BLOCK_UNUSED , "given block not used");
         if (self instanceof RubyArray) return ((RubyArray) self).find_index(context, cond);
 
         return find_indexCommon(context, eachSite(context), self, cond);
@@ -1086,7 +1086,7 @@ public static IRubyObject inject(ThreadContext context, IRubyObject self, IRubyO
     public static IRubyObject inject(ThreadContext context, IRubyObject self, IRubyObject init, IRubyObject method, final Block block) {
         final Ruby runtime = context.runtime;
 
-        if (block.isGiven()) runtime.getWarnings().warning(ID.BLOCK_UNUSED , "given block not used");
+        if (block.isGiven()) runtime.getWarnings().warn(ID.BLOCK_UNUSED , "given block not used");
 
         final String methodId = method.asJavaString();
         final SingleObject<IRubyObject> result = new SingleObject<>(init);
@@ -1591,7 +1591,7 @@ public static IRubyObject none_pCommon(ThreadContext context, CallSite each, IRu
         final boolean patternGiven = pattern != null;
 
         if (block.isGiven() && patternGiven) {
-            context.runtime.getWarnings().warning(ID.BLOCK_UNUSED, "given block not used");
+            context.runtime.getWarnings().warn(ID.BLOCK_UNUSED, "given block not used");
         }
 
         try {
@@ -1646,7 +1646,7 @@ public static IRubyObject one_pCommon(ThreadContext context, CallSite each, IRub
         final boolean patternGiven = pattern != null;
 
         if (block.isGiven() && patternGiven) {
-            context.runtime.getWarnings().warning(ID.BLOCK_UNUSED, "given block not used");
+            context.runtime.getWarnings().warn(ID.BLOCK_UNUSED, "given block not used");
         }
 
         try {
@@ -1729,7 +1729,7 @@ public static IRubyObject all_pCommon(ThreadContext localContext, CallSite each,
         final boolean patternGiven = pattern != null;
 
         if (block.isGiven() && patternGiven) {
-            localContext.runtime.getWarnings().warning(ID.BLOCK_UNUSED, "given block not used");
+            localContext.runtime.getWarnings().warn(ID.BLOCK_UNUSED, "given block not used");
         }
 
         try {
@@ -1819,7 +1819,7 @@ public static IRubyObject any_pCommon(ThreadContext localContext, CallSite site,
         final boolean patternGiven = pattern != null;
 
         if (block.isGiven() && patternGiven) {
-            localContext.runtime.getWarnings().warning(ID.BLOCK_UNUSED, "given block not used");
+            localContext.runtime.getWarnings().warn(ID.BLOCK_UNUSED, "given block not used");
         }
 
         try {
diff --git a/core/src/main/java/org/jruby/RubyModule.java b/core/src/main/java/org/jruby/RubyModule.java
index d25f32b3c20a..0c24ff0f3bc6 100644
--- a/core/src/main/java/org/jruby/RubyModule.java
+++ b/core/src/main/java/org/jruby/RubyModule.java
@@ -4912,9 +4912,9 @@ private IRubyObject setConstantCommon(String name, IRubyObject value, boolean hi
             if (notAutoload || !setAutoloadConstant(name, value, file, line)) {
                 if (warn && notAutoload) {
                     if (this.equals(getRuntime().getObject())) {
-                        getRuntime().getWarnings().warning(ID.CONSTANT_ALREADY_INITIALIZED, "already initialized constant " + name);
+                        getRuntime().getWarnings().warn(ID.CONSTANT_ALREADY_INITIALIZED, "already initialized constant " + name);
                     } else {
-                        getRuntime().getWarnings().warning(ID.CONSTANT_ALREADY_INITIALIZED, "already initialized constant " + this + "::" + name);
+                        getRuntime().getWarnings().warn(ID.CONSTANT_ALREADY_INITIALIZED, "already initialized constant " + this + "::" + name);
                     }
                 }
 
diff --git a/core/src/main/java/org/jruby/parser/RubyParserBase.java b/core/src/main/java/org/jruby/parser/RubyParserBase.java
index a5e1a36f9340..75c3f99fdb97 100644
--- a/core/src/main/java/org/jruby/parser/RubyParserBase.java
+++ b/core/src/main/java/org/jruby/parser/RubyParserBase.java
@@ -1597,11 +1597,11 @@ public void warn(int line, String message) {
 
     // FIXME: Replace this with file/line version and stop using ISourcePosition
     public void warning(int line, String message) {
-        if (warnings.isVerbose()) warning(ID.USELESS_EXPRESSION, lexer.getFile(), line, message);
+        warning(ID.USELESS_EXPRESSION, lexer.getFile(), line, message);
     }
 
     public void warning(ID id, String file, int line, String message) {
-        warnings.warning(id, file, line + 1, message); // node/lexer lines are 0 based
+        warnings.warn(id, file, line + 1, message); // node/lexer lines are 0 based
     }
 
     // ENEBO: Totally weird naming (in MRI is not allocated and is a local var name) [1.9]
diff --git a/core/src/main/java/org/jruby/util/StringSupport.java b/core/src/main/java/org/jruby/util/StringSupport.java
index 8b1e9f818386..77bad8bcce8c 100644
--- a/core/src/main/java/org/jruby/util/StringSupport.java
+++ b/core/src/main/java/org/jruby/util/StringSupport.java
@@ -2071,7 +2071,7 @@ public static IRubyObject rbStrEnumerateLines(RubyString str, ThreadContext cont
             if (wantarray) {
                 // this code should be live in 3.0
                 if (false) { // #if STRING_ENUMERATORS_WANTARRAY
-                    runtime.getWarnings().warning(ID.BLOCK_UNUSED, "given block not used");
+                    runtime.getWarnings().warn(ID.BLOCK_UNUSED, "given block not used");
                 } else {
                     runtime.getWarnings().warning(ID.BLOCK_DEPRECATED, "passing a block to String#lines is deprecated");
                     wantarray = false;