diff --git a/src/resource/ResourceView.js b/src/resource/ResourceView.js
index 169b309..c0df8a1 100644
--- a/src/resource/ResourceView.js
+++ b/src/resource/ResourceView.js
@@ -682,7 +682,7 @@ function ResourceView(element, calendar, viewName) {
 			slotIndex--;
 		}
 		if (slotIndex >= 0) {
-			addMinutes(d, minMinute + slotIndex * snapMinutes);
+			d.add('m', minMinute + slotIndex * snapMinutes);
 		}
 		return d;
 	}