diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 136f73002..2c0f565ab 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -353,7 +353,7 @@ if( ZD_CMAKE_COMPILER_IS_GNUCXX_COMPATIBLE )
 	endif ()
 
 	if( NOT X64 AND NOT CAN_DO_MFPMATH )
-		set( CMAKE_C_FLAGS "-DNO_SSE ${CMAKE_CXX_FLAGS}" )
+		set( CMAKE_C_FLAGS "-DNO_SSE ${CMAKE_C_FLAGS}" )
 		set( CMAKE_CXX_FLAGS "-DNO_SSE ${CMAKE_CXX_FLAGS}" )
 	endif()