diff --git a/ui/datepicker.js b/ui/datepicker.js
index d3fe3dd1fe..34ffc578ed 100644
--- a/ui/datepicker.js
+++ b/ui/datepicker.js
@@ -389,6 +389,10 @@ $.extend(Datepicker.prototype, {
 		} else if (nodeName === "div" || nodeName === "span") {
 			$target.removeClass(this.markerClassName).empty();
 		}
+
+		if ( datepicker_instActive === inst ) {
+			datepicker_instActive = null;
+		}
 	},
 
 	/* Enable the date picker to a jQuery selection.