diff --git a/pgrep.c b/pgrep.c
index c7535f77..94a2cbe1 100644
--- a/pgrep.c
+++ b/pgrep.c
@@ -499,7 +499,7 @@ static struct el * select_procs (int *num)
 		      stderr);
 		exit (EXIT_FATAL);
 	}
-	
+
 	memset(&task, 0, sizeof (task));
 	while(readproc(ptp, &task)) {
 		int match = 1;
diff --git a/skill.c b/skill.c
index ab83a030..01b29cb0 100644
--- a/skill.c
+++ b/skill.c
@@ -640,14 +640,14 @@ static void skillsnice_parse(int argc,
 		case NS_OPTION:
 			ns_pid = atoi(optarg);
 			if (ns_pid == 0) {
-				xwarnx(_("invalid pid number %i"), optarg);
+				xwarnx(_("invalid pid number %s"), optarg);
 				kill_usage(stderr);
 			}
 			if (ns_read(ns_pid, &ns_task)) {
 				xwarnx(_("error reading reference namespace "
 					 "information"));
 				kill_usage(stderr);
-			}	
+			}
 
 			break;
 		case NSLIST_OPTION: