diff --git a/scripts/package/mkspec b/scripts/package/mkspec
index 62c5ffdf2fdf..2500886fb90a 100755
--- a/scripts/package/mkspec
+++ b/scripts/package/mkspec
@@ -57,7 +57,7 @@ fi
 echo "%build"
 
 if ! $PREBUILT; then
-echo "make clean && make %{_smp_mflags}"
+echo "make clean && make %{?_smp_mflags}"
 echo ""
 fi