diff --git a/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/diagnostics/DefaultErrorMessagesJvm.java b/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/diagnostics/DefaultErrorMessagesJvm.java
index e9cb3e71716..7cd003aa75a 100644
--- a/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/diagnostics/DefaultErrorMessagesJvm.java
+++ b/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/diagnostics/DefaultErrorMessagesJvm.java
@@ -113,8 +113,8 @@ public class DefaultErrorMessagesJvm implements DefaultErrorMessages.Extension {
                 "Please make explicit overrides (abstract or concrete) for the following non-abstract members of ''{1}'': {2}",
                 Renderers.NAME, Renderers.NAME, Renderers.TO_STRING);
 
-        MAP.put(ErrorsJvm.DEFAULT_METHOD_CALL_FROM_JAVA6_TARGET, "Super calls to Java default methods are deprecated in JVM target 1.6. Recompile with ''-jvm-target 1.8''");
-        MAP.put(ErrorsJvm.INTERFACE_STATIC_METHOD_CALL_FROM_JAVA6_TARGET, "Calls to static methods in Java interfaces are deprecated in JVM target 1.6. Recompile with ''-jvm-target 1.8''");
+        MAP.put(ErrorsJvm.DEFAULT_METHOD_CALL_FROM_JAVA6_TARGET, "Super calls to Java default methods are deprecated in JVM target 1.6. Recompile with '-jvm-target 1.8'");
+        MAP.put(ErrorsJvm.INTERFACE_STATIC_METHOD_CALL_FROM_JAVA6_TARGET, "Calls to static methods in Java interfaces are deprecated in JVM target 1.6. Recompile with '-jvm-target 1.8'");
     }
 
     @NotNull