diff --git a/src/buffer.c b/src/buffer.c
index edb38d6..6dfe007 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -5473,6 +5473,10 @@
 
 	    /* first sign in signlist */
 	    buf->b_signlist = newsign;
+#ifdef FEAT_NETBEANS_INTG
+	    if (netbeans_active())
+		buf->b_has_sign_column = TRUE;
+#endif
 	}
 	else
 	    prev->next = newsign;