diff --git a/std/jule/sema/fn.jule b/std/jule/sema/fn.jule
index 354665c34..929c2842b 100644
--- a/std/jule/sema/fn.jule
+++ b/std/jule/sema/fn.jule
@@ -282,6 +282,10 @@ impl Kind for FnIns {
             ret p1.kind.equals(p2.kind)
         }
 
+        if f.params.len != self.params.len {
+            ret false
+        }
+
         i = 0
         for i < self.params.len; i++ {
             if !check_params(self.params[i], f.params[i]) {