diff --git a/spring-webmvc/src/main/java/org/springframework/web/servlet/resource/ResourceUrlProvider.java b/spring-webmvc/src/main/java/org/springframework/web/servlet/resource/ResourceUrlProvider.java
index c2feaaf075cf..44cfea267e2b 100644
--- a/spring-webmvc/src/main/java/org/springframework/web/servlet/resource/ResourceUrlProvider.java
+++ b/spring-webmvc/src/main/java/org/springframework/web/servlet/resource/ResourceUrlProvider.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2015 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -129,6 +129,9 @@ public void onApplicationEvent(ContextRefreshedEvent event) {
 			if (this.handlerMap.isEmpty() && logger.isDebugEnabled()) {
 				logger.debug("No resource handling mappings found");
 			}
+			if(!this.handlerMap.isEmpty()) {
+				this.autodetect = false;
+			}
 		}
 	}
 
diff --git a/spring-webmvc/src/test/java/org/springframework/web/servlet/resource/ResourceUrlProviderTests.java b/spring-webmvc/src/test/java/org/springframework/web/servlet/resource/ResourceUrlProviderTests.java
index beb043d113b1..d504d6820b25 100644
--- a/spring-webmvc/src/test/java/org/springframework/web/servlet/resource/ResourceUrlProviderTests.java
+++ b/spring-webmvc/src/test/java/org/springframework/web/servlet/resource/ResourceUrlProviderTests.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2015 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,11 +21,17 @@
 import java.util.List;
 import java.util.Map;
 
+import org.hamcrest.Matchers;
 import org.junit.Before;
 import org.junit.Test;
 
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
 import org.springframework.core.io.ClassPathResource;
 import org.springframework.core.io.Resource;
+import org.springframework.mock.web.test.MockServletContext;
+import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
+import org.springframework.web.servlet.handler.SimpleUrlHandlerMapping;
 
 import static org.junit.Assert.*;
 
@@ -88,4 +94,34 @@ private void initTranslator() {
 		this.translator.setHandlerMap(this.handlerMap);
 	}
 
+	// SPR-12592
+	@Test
+	public void initializeOnce() throws Exception {
+		AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext();
+		context.setServletContext(new MockServletContext());
+		context.register(HandlerMappingConfiguration.class);
+		context.refresh();
+		ResourceUrlProvider translator = context.getBean(ResourceUrlProvider.class);
+		assertThat(translator.getHandlerMap(), Matchers.hasKey("/resources/**"));
+		assertFalse(translator.isAutodetect());
+	}
+
+	@Configuration
+	public static class HandlerMappingConfiguration {
+		@Bean
+		public SimpleUrlHandlerMapping simpleUrlHandlerMapping() {
+			ResourceHttpRequestHandler handler = new ResourceHttpRequestHandler();
+			HashMap<String, ResourceHttpRequestHandler> handlerMap = new HashMap<String, ResourceHttpRequestHandler>();
+			handlerMap.put("/resources/**", handler);
+			SimpleUrlHandlerMapping hm = new SimpleUrlHandlerMapping();
+			hm.setUrlMap(handlerMap);
+			return hm;
+		}
+
+		@Bean
+		public ResourceUrlProvider resourceUrlProvider() {
+			return new ResourceUrlProvider();
+		}
+	}
+
 }