diff --git a/isisd/isis_srv6.c b/isisd/isis_srv6.c
index 0e6e36e9a8..e1b94a60c8 100644
--- a/isisd/isis_srv6.c
+++ b/isisd/isis_srv6.c
@@ -17,6 +17,9 @@
 #include "isisd/isis_srv6.h"
 #include "isisd/isis_zebra.h"
 
+/* Local variables and functions */
+DEFINE_MTYPE_STATIC(ISISD, ISIS_SRV6_SID, "ISIS SRv6 Segment ID");
+
 /**
  * Unset the SRv6 locator for a given IS-IS area.
  *