diff --git a/src/gb/gprs_bssgp_rim.c b/src/gb/gprs_bssgp_rim.c
index 2096977..23fb3a0 100644
--- a/src/gb/gprs_bssgp_rim.c
+++ b/src/gb/gprs_bssgp_rim.c
@@ -438,7 +438,7 @@
 	} else {
 		memmove(buf_ptr + 1, buf_ptr, len);
 		buf_ptr[1] = len >> 8;
-		buf_ptr[1] = len & 0xff;
+		buf_ptr[2] = len & 0xff;
 		buf_ptr += TVLV_HDR_MAXLEN;
 	}
 	buf_ptr += len;