diff --git a/libmudflap/ChangeLog b/libmudflap/ChangeLog
index 0fa7c2d7dc74..29f6f5187b8b 100644
--- a/libmudflap/ChangeLog
+++ b/libmudflap/ChangeLog
@@ -1,3 +1,7 @@
+2005-04-04  Alan Modra  <amodra@bigpond.net.au>
+
+	* mf-runtime.c (__mfu_unregister): Warning fix for char unsigned.
+
 2005-03-21  Mike Stump  <mrs@apple.com>
 
 	* mf-heuristics.c: Fix whitespace at end of line.
diff --git a/libmudflap/mf-runtime.c b/libmudflap/mf-runtime.c
index a4adf3eee512..5732c0634082 100644
--- a/libmudflap/mf-runtime.c
+++ b/libmudflap/mf-runtime.c
@@ -1273,9 +1273,8 @@ __mfu_unregister (void *ptr, size_t sz, int type)
           }
 
         /* Manage the object cemetary.  */
-        if (__mf_opts.persistent_count > 0 &&
-            old_obj->type >= 0 &&
-            old_obj->type <= __MF_TYPE_MAX_CEM)
+        if (__mf_opts.persistent_count > 0
+	    && (unsigned) old_obj->type <= __MF_TYPE_MAX_CEM)
           {
             old_obj->deallocated_p = 1;
             old_obj->dealloc_pc = (uintptr_t) __builtin_return_address (0);