diff --git a/library/Osmocom_Types.ttcn b/library/Osmocom_Types.ttcn
index 495b684..a748bbc 100644
--- a/library/Osmocom_Types.ttcn
+++ b/library/Osmocom_Types.ttcn
@@ -60,4 +60,10 @@
 		return prefix & f_rnd_octstring(len - lengthof(prefix));
 	}
 
+	function f_sleep(float seconds) {
+		timer T := seconds;
+		T.start;
+		T.timeout;
+	}
+
 } with { encode "RAW"; variant "FIELDORDER(msb)" }
diff --git a/msc_tests/MSC_Tests.ttcn b/msc_tests/MSC_Tests.ttcn
index aee0165..a6e92bc 100644
--- a/msc_tests/MSC_Tests.ttcn
+++ b/msc_tests/MSC_Tests.ttcn
@@ -383,12 +383,6 @@
 	return vc_conn;
 }
 
-function f_sleep(float seconds) {
-	timer T := seconds;
-	T.start;
-	T.timeout;
-}
-
 function f_vty_config(TELNETasp_PT pt, charstring config_node, charstring cmd)
 {
 	/* enter config mode; enter node */