diff -Nurp guitarix-0.28.1/tools/make_jsonrpc_methods guitarix-0.28.1.mod/tools/make_jsonrpc_methods
--- guitarix-0.28.1/tools/make_jsonrpc_methods	2013-07-20 11:55:23.000000000 +0200
+++ guitarix-0.28.1.mod/tools/make_jsonrpc_methods	2013-07-21 12:48:30.109255260 +0200
@@ -14,7 +14,7 @@ def add_enums(template_name, hashtable_n
     hashtable = open(hashtable_name, "w")
     hashtable.write(headline)
     hashtable.flush()
-    gperf = Popen(gperf_program, stdin=PIPE, stdout=hashtable)
+    gperf = Popen([gperf_program, '-H','gperf_hash'], stdin=PIPE, stdout=hashtable)
     enumlist = []
     section = 0
     in_comment = False