diff --git a/src/core/core.tooltip.js b/src/core/core.tooltip.js
index ddf78f62a..4b742d3a8 100644
--- a/src/core/core.tooltip.js
+++ b/src/core/core.tooltip.js
@@ -250,7 +250,7 @@ module.exports = function(Chart) {
 								datasetIndex: datasetIndex
 							});
 						}
-					}, null, element._yScale.options.stacked);
+					}, null);
 
 					helpers.each(this._active, function(active) {
 						if (active) {
@@ -259,10 +259,9 @@ module.exports = function(Chart) {
 								backgroundColor: active._view.backgroundColor
 							});
 						}
-					}, null, element._yScale.options.stacked);
+					}, null);
 
 					tooltipPosition = this.getAveragePosition(this._active);
-					tooltipPosition.y = this._active[0]._yScale.getPixelForDecimal(0.5);
 				}
 
 				// Build the Text Lines