diff -r 7fc3d62481ba -r 1dab70e20292 src/jdk.compiler/share/classes/com/sun/tools/javac/resources/compiler.properties
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/resources/compiler.properties	Thu Jan 18 09:01:00 2018 -0800
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/resources/compiler.properties	Thu Jan 18 18:58:46 2018 +0000
@@ -1144,16 +1144,21 @@
 compiler.err.type.var.more.than.once.in.result=\
     type variable {0} occurs more than once in type of {1}; cannot be left uninstantiated
 
-# 0: type, 1: type, 2: string
-compiler.err.types.incompatible.diff.ret=\
-    types {0} and {1} are incompatible; both define {2}, but with unrelated return types
+# 0: type, 1: type, 2: fragment
+compiler.err.types.incompatible=\
+    types {0} and {1} are incompatible;\n\
+    {2}
+
+# 0: name, 1: list of type
+compiler.misc.incompatible.diff.ret=\
+    both define {0}({1}), but with unrelated return types
 
 # 0: kind name, 1: type, 2: name, 3: list of type, 4: symbol, 5: symbol
-compiler.err.types.incompatible.unrelated.defaults=\
+compiler.misc.incompatible.unrelated.defaults=\
     {0} {1} inherits unrelated defaults for {2}({3}) from types {4} and {5}
 
 # 0: kind name, 1: type, 2: name, 3: list of type, 4: symbol, 5: symbol
-compiler.err.types.incompatible.abstract.default=\
+compiler.misc.incompatible.abstract.default=\
     {0} {1} inherits abstract and default for {2}({3}) from types {4} and {5}
 
 # 0: name, 1: kind name, 2: symbol