diff --git a/library/OSMUX_Emulation.ttcn b/library/OSMUX_Emulation.ttcn
index 6189266..10338d2 100644
--- a/library/OSMUX_Emulation.ttcn
+++ b/library/OSMUX_Emulation.ttcn
@@ -55,6 +55,7 @@
 import from Osmocom_Types all;
 import from IPL4asp_Types all;
 import from Misc_Helpers all;
+import from AMR_Types all;
 import from OSMUX_Types all;
 import from OSMUX_CodecPort all;
 import from OSMUX_CodecPort_CtrlFunct all;