SeleniumHQ
diff --git a/‎java/client/src/org/openqa/selenium/firefox/internal/Executable.java‎
Lines changed: 1 addition & 1 deletion b/‎java/client/src/org/openqa/selenium/firefox/internal/Executable.java‎
Lines changed: 1 addition & 1 deletion
@@ -124,7 +124,7 @@ private static File locateFirefoxBinaryFromSystemProperty() {
       return null;
 
     File binary = new File(binaryName);
-    if (binary.exists())
+    if (binary.exists() && !binary.isDirectory())
       return binary;
 
     Platform current = Platform.getCurrent();