diff --git a/CMakeLists.txt b/CMakeLists.txt
index f8fbca69b..2c4a8915b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -954,7 +954,11 @@ IF(CMAKE_COMPILER_IS_GNUCXX)
     # errors instead of warnings for certain issues, including superfluous
     # semicolons and commas, and the use of long long. -fpermissive seems
     # to be the workaround.
-    SET(OSG_AGGRESSIVE_WARNING_FLAGS -Wall -Wshadow -Wparentheses -Wno-long-long -Wno-import -pedantic -Wreturn-type -Wmissing-braces -Wunknown-pragmas -Wunused)
+    SET(OSG_AGGRESSIVE_WARNING_FLAGS -Wall -Wparentheses -Wno-long-long -Wno-import -pedantic -Wreturn-type -Wmissing-braces -Wunknown-pragmas -Wunused)
+
+    IF(${CMAKE_MAJOR_VERSION} GREATER 2 AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 4.9)
+        SET(OSG_AGGRESSIVE_WARNING_FLAGS ${OSG_AGGRESSIVE_WARNING_FLAGS} -Wshadow)
+    ENDIF()
 
     # Previous included -Wformat=2 in OSG_AGGRESSIVE_WARNING_FLAGS but had to remove it due to standard library errors