Index: uspace/app/trace/ipcp.c
===================================================================
--- uspace/app/trace/ipcp.c	(revision fafb8e5dc8a80c87cf66270ca6f93d574a95471c)
+++ uspace/app/trace/ipcp.c	(revision 8add15e0d742e2ce9688f92ee8e6378e2caa7b04)
@@ -72,7 +72,7 @@
 proto_t	*proto_unknown;		/**< Protocol with no known methods. */
 
-static size_t pending_call_key_hash(void *key)
-{
-	cap_call_handle_t *chandle = (cap_call_handle_t *) key;
+static size_t pending_call_key_hash(const void *key)
+{
+	const cap_call_handle_t *chandle = key;
 	return cap_handle_raw(*chandle);
 }
@@ -84,7 +84,7 @@
 }
 
-static bool pending_call_key_equal(void *key, const ht_link_t *item)
-{
-	cap_call_handle_t *chandle = (cap_call_handle_t *) key;
+static bool pending_call_key_equal(const void *key, const ht_link_t *item)
+{
+	const cap_call_handle_t *chandle = key;
 	pending_call_t *hs = hash_table_get_inst(item, pending_call_t, link);