diff --git a/transpose.c b/transpose.c
index d65ee81..f293ce7 100644
--- a/transpose.c
+++ b/transpose.c
@@ -49,7 +49,7 @@
 
 #ifdef __SSSE3__
 #include <tmmintrin.h>
-#elif defined(__SSE2)__
+#elif defined(__SSE2__)
 #include <pmmintrin.h>
 #endif