Index: channels/chan_zap.c
===================================================================
--- channels/chan_zap.c	(revision 11436)
+++ channels/chan_zap.c	(working copy)
@@ -120,7 +120,6 @@
 static struct ast_jb_conf global_jbconf;
 #endif /* AST_JB */
 
-#ifndef ZT_SIG_EM_E1
 #ifndef ZT_SIG_HARDHDLC
 #error "Your zaptel is too old.  please update"
 #endif