diff --git a/Modules/CMakeRCCompiler.cmake.in b/Modules/CMakeRCCompiler.cmake.in
index 0fc314220..8257cd6a1 100644
--- a/Modules/CMakeRCCompiler.cmake.in
+++ b/Modules/CMakeRCCompiler.cmake.in
@@ -1,6 +1,6 @@
 set(CMAKE_RC_COMPILER "@CMAKE_RC_COMPILER@")
 set(CMAKE_RC_COMPILER_ARG1 "@CMAKE_RC_COMPILER_ARG1@")
 set(CMAKE_RC_COMPILER_LOADED 1)
-set(CMAKE_RC_SOURCE_FILE_EXTENSIONS rc)
+set(CMAKE_RC_SOURCE_FILE_EXTENSIONS rc;RC)
 set(CMAKE_RC_OUTPUT_EXTENSION @CMAKE_RC_OUTPUT_EXTENSION@)
 set(CMAKE_RC_COMPILER_ENV_VAR "RC")