diff --git a/libs/gst/check/libcheck/check_run.c b/libs/gst/check/libcheck/check_run.c
index 0c7b815229..9390cd9f08 100644
--- a/libs/gst/check/libcheck/check_run.c
+++ b/libs/gst/check/libcheck/check_run.c
@@ -571,7 +571,8 @@ check_fork (void)
 #ifdef _POSIX_VERSION
   pid_t pid = fork ();
   /* Set the process to a process group to be able to kill it easily. */
-  setpgid (pid, group_pid);
+  if (pid > 0)
+    setpgid (pid, group_pid);
   return pid;
 #else /* _POSIX_VERSION */
   eprintf ("This version does not support fork", __FILE__, __LINE__);