diff --git a/include/osmocom/msc/vlr_sgs.h b/include/osmocom/msc/vlr_sgs.h
index 05e062b..7231449 100644
--- a/include/osmocom/msc/vlr_sgs.h
+++ b/include/osmocom/msc/vlr_sgs.h
@@ -26,7 +26,7 @@
 struct vlr_subscr;
 struct vlr_instance;
 
-#define VSUB_USE_SGS "SGs"
+#define VSUB_USE_SGS_LU "SGs-lu"
 #define VSUB_USE_SGS_PAGING_REQ "SGs-paging-req"
 
 /* See also 3GPP TS 29.118, chapter 4.2.2 States at the VLR */