diff --git a/code/CMakeModules/nel.cmake b/code/CMakeModules/nel.cmake
index 07ea78f25..2d7632aa8 100644
--- a/code/CMakeModules/nel.cmake
+++ b/code/CMakeModules/nel.cmake
@@ -617,6 +617,10 @@ MACRO(NL_SETUP_BUILD)
       ENDIF(CLANG)
     ENDIF(WIN32)
 
+    IF(WITH_SSE3)
+      ADD_PLATFORM_FLAGS("-msse3")
+    ENDIF(WITH_SSE3)
+
     IF(APPLE)
       IF(NOT XCODE)
         IF(CMAKE_OSX_ARCHITECTURES)