diff --git a/regress/test-exec.sh b/regress/test-exec.sh
index 5dc975d07..ee47f572c 100644
--- a/regress/test-exec.sh
+++ b/regress/test-exec.sh
@@ -42,6 +42,10 @@ elif logname >/dev/null 2>&1; then
 else
 	USER=`id -un`
 fi
+if test -z "$LOGNAME"; then
+	LOGNAME="${USER}"
+	export LOGNAME
+fi
 
 OBJ=$1
 if [ "x$OBJ" = "x" ]; then