diff --git a/addrcheck/ac_main.c b/addrcheck/ac_main.c
index 0190966..ce653f7 100644
--- a/addrcheck/ac_main.c
+++ b/addrcheck/ac_main.c
@@ -1199,7 +1199,9 @@
    static Int moans = 3;
 
    /* Overload memcheck client reqs */
-   if (!VG_IS_SKIN_USERREQ('M','C',arg[0]))
+   if (!VG_IS_SKIN_USERREQ('M','C',arg[0])
+    && VG_USERREQ__MALLOCLIKE_BLOCK != arg[0]
+    && VG_USERREQ__FREELIKE_BLOCK   != arg[0])
       return False;
 
    switch (arg[0]) {