diff --git a/src/vz/vz_driver.c b/src/vz/vz_driver.c
index bb1afd0d4f08dfcf56d1dcf0fc3f6df6d1a3fd43..da83a8ff5ca768f94b3d1e35ff13aa1d3d2c0c8a 100644
--- a/src/vz/vz_driver.c
+++ b/src/vz/vz_driver.c
@@ -121,7 +121,7 @@ vzBuildCapabilities(void)
 
     verify(ARRAY_CARDINALITY(archs) == ARRAY_CARDINALITY(emulators));
 
-    for (i = 0; i < ARRAY_CARDINALITY(os_types); i++)
+    for (i = 0; i < ARRAY_CARDINALITY(ostypes); i++)
         for (j = 0; j < ARRAY_CARDINALITY(archs); j++)
             for (k = 0; k < ARRAY_CARDINALITY(emulators); k++)
                 if (vzCapsAddGuestDomain(caps, ostypes[i], archs[j],