diff -aur sofia-sip-1.12.11.pristine/libsofia-sip-ua/msg/msg_parser.c sofia-sip-1.12.11.new/libsofia-sip-ua/msg/msg_parser.c
--- sofia-sip-1.12.11.pristine/libsofia-sip-ua/msg/msg_parser.c	2015-03-17 15:12:22.413197247 -0500
+++ sofia-sip-1.12.11.new/libsofia-sip-ua/msg/msg_parser.c	2015-03-17 15:23:49.223178197 -0500
@@ -2468,8 +2468,6 @@
 msg_header_t **
 msg_hclass_offset(msg_mclass_t const *mc, msg_pub_t const *mo, msg_hclass_t *hc)
 {
-  int i;
-
   assert(mc && hc);
 
   if (mc == NULL || hc == NULL)
@@ -2484,10 +2482,21 @@
   }
   else
     /* Header has no name. */
-    for (i = 0; i <= 6; i++)
-      if (hc->hc_hash == mc->mc_request[i].hr_class->hc_hash)
-	return (msg_header_t **)((char *)mo + mc->mc_request[i].hr_offset);
-
+      if (hc->hc_hash == mc->mc_request[0].hr_class->hc_hash)
+        return (msg_header_t **)((char *)mo + mc->mc_request[0].hr_offset);
+      else if (hc->hc_hash == mc->mc_status[0].hr_class->hc_hash)
+        return (msg_header_t **)((char *)mo + mc->mc_status[0].hr_offset);
+      else if (hc->hc_hash == mc->mc_separator[0].hr_class->hc_hash)
+        return (msg_header_t **)((char *)mo + mc->mc_separator[0].hr_offset);
+      else if (hc->hc_hash == mc->mc_payload[0].hr_class->hc_hash)
+        return (msg_header_t **)((char *)mo + mc->mc_payload[0].hr_offset);
+      else if (hc->hc_hash == mc->mc_unknown[0].hr_class->hc_hash)
+        return (msg_header_t **)((char *)mo + mc->mc_unknown[0].hr_offset);
+      else if (hc->hc_hash == mc->mc_error[0].hr_class->hc_hash)
+        return (msg_header_t **)((char *)mo + mc->mc_error[0].hr_offset);
+      else if (hc->hc_hash == mc->mc_multipart[0].hr_class->hc_hash)
+        return (msg_header_t **)((char *)mo + mc->mc_multipart[0].hr_offset);
+  
   return NULL;
 }