diff --git a/epan/dissectors/packet-gsm_osmux.c b/epan/dissectors/packet-gsm_osmux.c
index 8fa8f4d69b..2f3c861702 100644
--- a/epan/dissectors/packet-gsm_osmux.c
+++ b/epan/dissectors/packet-gsm_osmux.c
@@ -66,7 +66,7 @@ static const value_string amr_ft_names[] =
     {0, NULL}
 };
 
-static guint8 amr_ft_bytes[AMR_FT_MAX] = {12, 13, 15, 17, 19, 20, 26, 31, 6};
+static guint8 amr_ft_bytes[AMR_FT_MAX] = {12, 13, 15, 17, 19, 20, 26, 31, 5};
 
 #define OSMUX_AMR_HEADER_LEN 4