diff --git a/configure b/configure
index 4e2f78a173..69190d2793 100755
--- a/configure
+++ b/configure
@@ -353,7 +353,7 @@ for opt do
   ;;
   --cpu=*) cpu="$optarg"
   ;;
-  --extra-cflags=*) QEMU_CFLAGS="$optarg $QEMU_CFLAGS"
+  --extra-cflags=*) QEMU_CFLAGS="$QEMU_CFLAGS $optarg"
                     EXTRA_CFLAGS="$optarg"
   ;;
   --extra-ldflags=*) LDFLAGS="$optarg $LDFLAGS"