diff --git a/src/template/win b/src/template/win
index c5366cf4935..736e0f293d3 100644
--- a/src/template/win
+++ b/src/template/win
@@ -1,3 +1,3 @@
 if test "$GCC" = yes; then
-  CFLAGS=-O2
+  CFLAGS="-O2"
 fi