1 files changed, 1 insertions, 1 deletions
diff --git a/src/set-fields.c b/src/set-fields.c
index 027429c94..0f4f61ec3 100644
--- a/src/set-fields.c
+++ b/src/set-fields.c
@@ -72,7 +72,7 @@ complement_rp (void)
   struct field_range_pair *c = frp;
   size_t n = n_frp;
 
-  frp = NULL;
+  frp = nullptr;
   n_frp = 0;
   n_frp_allocated = 0;