diff --git a/cmd/zfs/zfs_main.c b/cmd/zfs/zfs_main.c
index 1917a0f39..3941ff58b 100644
--- a/cmd/zfs/zfs_main.c
+++ b/cmd/zfs/zfs_main.c
@@ -9285,7 +9285,7 @@ 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 b1e1b2150..463e3748e 100644
--- a/cmd/zpool/zpool_main.c
+++ b/cmd/zpool/zpool_main.c
@@ -13782,7 +13782,7 @@ 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);
 }