diff --git a/include/osmocom/sgsn/gprs_sgsn.h b/include/osmocom/sgsn/gprs_sgsn.h
index a0a056f..10455d6 100644
--- a/include/osmocom/sgsn/gprs_sgsn.h
+++ b/include/osmocom/sgsn/gprs_sgsn.h
@@ -108,8 +108,10 @@
 	MM_CTX_T_GERAN_Gb,
 	/* UMTS via Iu */
 	MM_CTX_T_UTRAN_Iu,
-	/* GPRS/EDGE via Iu */
+#if 0
+	/* GPRS/EDGE via Iu, not supported */
 	MM_CTX_T_GERAN_Iu,
+#endif
 };
 
 struct service_info {
diff --git a/src/gprs/sgsn_libgtp.c b/src/gprs/sgsn_libgtp.c
index e9fffd8..88b8d04 100644
--- a/src/gprs/sgsn_libgtp.c
+++ b/src/gprs/sgsn_libgtp.c
@@ -279,7 +279,9 @@
 	pdp->userloc.l = 8;
 	switch (mmctx->ran_type) {
 	case MM_CTX_T_GERAN_Gb:
+#if 0
 	case MM_CTX_T_GERAN_Iu:
+#endif
 		pdp->rattype.v[0] = 2;
 		/* User Location Information */
 		pdp->userloc_given = 1;