diff --git a/library/SMPP_Emulation.ttcn b/library/SMPP_Emulation.ttcn
index c14340c..27876dc 100644
--- a/library/SMPP_Emulation.ttcn
+++ b/library/SMPP_Emulation.ttcn
@@ -314,7 +314,7 @@
 
 		[] SMPP_PROC.getcall(SMPPEM_register:{?,?}) -> param(dest_addr, vc_conn) {
 			f_create_expect(dest_addr, vc_conn);
-			SMPP_PROC.reply(SMPPEM_register:{dest_addr, vc_conn});
+			SMPP_PROC.reply(SMPPEM_register:{dest_addr, vc_conn}) to vc_conn;
 			}
 		}
 	}