diff --git a/CMakeLists.txt b/CMakeLists.txt
index 801fee9da..8d1a0d56a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1047,7 +1047,7 @@ IF(CMAKE_COMPILER_IS_GNUCXX)
     MESSAGE( STATUS "g++ version ${CMAKE_CXX_COMPILER_VERSION} ")
     IF(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 4.6)
         SET(OSG_AGGRESSIVE_WARNING_FLAGS ${OSG_AGGRESSIVE_WARNING_FLAGS} -Wmaybe-uninitialized -Wextra)
-        IF(CMAKE_CXX_COMPILER_VERSIO VERSION_GREATER 4.9)
+        IF(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 4.9)
             SET(OSG_AGGRESSIVE_WARNING_FLAGS ${OSG_AGGRESSIVE_WARNING_FLAGS} -Wshadow)
             IF(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 6.0)
                 # -Wmisleading-indentation (in -Wall) generates less warnings when interpreting tab as 4 spaces instead of the default of 8