diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index 3830e7d..f99d46b 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -1432,7 +1432,7 @@
 type function void_fn(charstring id) runs on MSC_ConnHdlr;
 
 /* helper function to create and connect a MSC_ConnHdlr component */
-function f_connect_handler(inout MSC_ConnHdlr vc_conn) runs on test_CT {
+private function f_connect_handler(inout MSC_ConnHdlr vc_conn) runs on test_CT {
 	connect(vc_conn:BSSMAPEM, g_bssap.vc_BSSMAP:PROC);
 	connect(vc_conn:MGCP_PROC, vc_MGCP:MGCP_PROC);
 	connect(vc_conn:RSL, bts[0].rsl.vc_RSL:CLIENT_PT);