diff --git a/cmd/zfs/zfs_main.c b/cmd/zfs/zfs_main.c
index b0c1c6012..d39b6fe5f 100644
--- a/cmd/zfs/zfs_main.c
+++ b/cmd/zfs/zfs_main.c
@@ -9410,7 +9410,7 @@ zfs_do_help(int argc, char **argv)
 
 	execlp("man", "man", page, NULL);
 
-	fprintf(stderr, "couldn't run man program: %s", strerror(errno));
+	fprintf(stderr, "couldn't run man program: %s\n", strerror(errno));
 	return (-1);
 }
 
diff --git a/cmd/zpool/zpool_main.c b/cmd/zpool/zpool_main.c
index 35c6c0baf..cd1b61f13 100644
--- a/cmd/zpool/zpool_main.c
+++ b/cmd/zpool/zpool_main.c
@@ -13781,7 +13781,7 @@ zpool_do_help(int argc, char **argv)
 
 	(void) execlp("man", "man", page, NULL);
 
-	fprintf(stderr, "couldn't run man program: %s", strerror(errno));
+	fprintf(stderr, "couldn't run man program: %s\n", strerror(errno));
 	return (-1);
 }