diff --git a/OneM2M_Types.ttcn b/OneM2M_Types.ttcn
index 418a9fe8094e50ea2c52bfe35dee6a0a06bec472..0ff388888beabf5e37c73515a98868590d75fbfe 100644
--- a/OneM2M_Types.ttcn
+++ b/OneM2M_Types.ttcn
@@ -1940,7 +1940,7 @@ with {
 };
 
 
-type XSD.String TMGI (pattern "([a-fA-F0-9]#(6))[\d]#(5)[\d]#(0,1)");
+type XSD.String TMGI (pattern "([a-fA-F0-9]#(6))[\d]#5[\d]#(0,1)");
 
 
 type XSD.String SessionDescription