diff --git a/configure b/configure
index a079a494a4..5f4d7180b5 100755
--- a/configure
+++ b/configure
@@ -154,7 +154,7 @@ int main(void) { return 0; }
 EOF
 for flag in $gcc_flags; do
     if compile_prog "-Werror $QEMU_CFLAGS" "-Werror $flag" ; then
-	QEMU_CFLAGS="$flag $QEMU_CFLAGS"
+	QEMU_CFLAGS="$QEMU_CFLAGS $flag"
     fi
 done