diff --git a/src/quickfix.c b/src/quickfix.c
index b2b6e8e..3794e6a 100644
--- a/src/quickfix.c
+++ b/src/quickfix.c
@@ -2595,7 +2595,7 @@
     {
 	while (STRLEN(buf) < 34)
 	    STRCAT(buf, " ");
-	STRCAT(buf, title);
+	vim_strcat(buf, title, IOSIZE);
     }
     trunc_string(buf, buf, Columns - 1, IOSIZE);
     msg(buf);