diff --git a/jquery.elevatezoom.js b/jquery.elevatezoom.js
index 343a886..5cf670c 100755
--- a/jquery.elevatezoom.js
+++ b/jquery.elevatezoom.js
@@ -1693,7 +1693,7 @@ if ( typeof Object.create !== 'function' ) {
 						if(self.nzWidth > self.nzHeight){
 							self.currentZoomLevel = self.newvaluewidth;
 						}
-						if(self.nzHeight > self.nzWidth){
+						else if(self.nzHeight >= self.nzWidth){
 							self.currentZoomLevel = self.newvaluewidth;
 						}
 					}