1 files changed, 2 insertions, 2 deletions
diff --git a/debvm-run b/debvm-run
index edb01ad..972eac6 100755
--- a/debvm-run
+++ b/debvm-run
@@ -140,9 +140,9 @@ else
 		;;
 	esac
 fi
-if test "$MAX_SMP" -gt 1; then
+if test -z "$MAX_SMP" || test "$MAX_SMP" -gt 1; then
 	NPROC=$(nproc)
-	test "$NPROC" -gt "$MAX_SMP" && NPROC=$MAX_SMP
+	test -n "$MAX_SMP" && test "$NPROC" -gt "$MAX_SMP" && NPROC=$MAX_SMP
 	set -- -smp "$NPROC" "$@"
 fi