1 files changed, 1 insertions, 1 deletions
diff --git a/src/nice.c b/src/nice.c
index 52d79efcf..6386e519a 100644
--- a/src/nice.c
+++ b/src/nice.c
@@ -36,7 +36,7 @@ char *program_name;
 
 static struct option const longopts[] =
 {
-  {"adjustment", 1, NULL, 'n'},
+  {"adjustment", required_argument, NULL, 'n'},
   {NULL, 0, NULL, 0}
 };