diff --git a/src/viewer/nroff.c b/src/viewer/nroff.c
index 95d743fb4..6be45305f 100644
--- a/src/viewer/nroff.c
+++ b/src/viewer/nroff.c
@@ -278,7 +278,7 @@ mcview_nroff_seq_free (mcview_nroff_t ** nroff)
     if (nroff == NULL || *nroff == NULL)
         return;
     g_free (*nroff);
-    nroff = NULL;
+    *nroff = NULL;
 }
 
 /* --------------------------------------------------------------------------------------------- */