diff --git a/ospfd/ospf_api.c b/ospfd/ospf_api.c
index fc3b51d..74a49e3 100644
--- a/ospfd/ospf_api.c
+++ b/ospfd/ospf_api.c
@@ -155,7 +155,7 @@
     { MSG_NSM_CHANGE,            "NSM change",             },
   };
 
-  int i, n = sizeof (NameTab) / sizeof (NameTab[0]);
+  int i, n = array_size(NameTab);
   const char *name = NULL;
 
   for (i = 0; i < n; i++)
@@ -187,7 +187,7 @@
     { OSPF_API_UNDEF,                   "Undefined",                  },
   };
 
-  int i, n = sizeof (NameTab) / sizeof (NameTab[0]);
+  int i, n = array_size(NameTab);
   const char *name = NULL;
 
   for (i = 0; i < n; i++)