diff --git a/java/com/tigervnc/vncviewer/CConn.java b/java/com/tigervnc/vncviewer/CConn.java
index fd07b27..cccb7ba 100644
--- a/java/com/tigervnc/vncviewer/CConn.java
+++ b/java/com/tigervnc/vncviewer/CConn.java
@@ -1002,7 +1002,7 @@
     } else {
       scaleString=scaleString.substring(0, scaleString.length()-1);
     }
-    if (oldScaleFactor != scaleString) {
+    if (!oldScaleFactor.equals(scaleString)) {
       viewer.scalingFactor.setParam(scaleString);
       if ((options.fullScreen.isSelected() == fullScreen) &&
           (desktop != null))