diff --git a/src/if_cscope.c b/src/if_cscope.c
index b5ca614..2f75390 100644
--- a/src/if_cscope.c
+++ b/src/if_cscope.c
@@ -2062,7 +2062,10 @@
     strcpy(tbuf, matches[0]);
     ptag = strtok(tbuf, "\t");
     if (ptag == NULL)
+    {
+	vim_free(tbuf);
 	return;
+    }
 
     newsize = (int)(strlen(cstag_msg) + strlen(ptag));
     buf = (char *)alloc(newsize);