diff --git a/zebra/test_main.c b/zebra/test_main.c
index 448d1ef..09f53ad 100644
--- a/zebra/test_main.c
+++ b/zebra/test_main.c
@@ -105,7 +105,7 @@
   exit (status);
 }
 
-static unsigned int test_ifindex = 0;
+static ifindex_t test_ifindex = 0;
 
 /* testrib commands */
 DEFUN (test_interface_state,