diff --git a/zmsentities/schema/availability.json b/zmsentities/schema/availability.json
index cd8ddcdb6..c6ed256fb 100644
--- a/zmsentities/schema/availability.json
+++ b/zmsentities/schema/availability.json
@@ -18,7 +18,7 @@
     "scope": {
       "id": 141
     },
-    "slotTimeInMinutes": 12,
+    "slotTimeInMinutes": 10,
     "startDate": 1447919543,
     "startTime": "10:00",
     "weekday": {