diff --git a/pidof.c b/pidof.c
index 4fa619a3..509bafac 100644
--- a/pidof.c
+++ b/pidof.c
@@ -166,7 +166,7 @@ static void select_procs (void)
 			}
 		}
 
-		if (!is_omitted(tid) && p_cmdline) {
+		if (!is_omitted(tid) && p_cmdline && *p_cmdline) {
 
 			cmd_arg0 = *p_cmdline;