diff --git a/core/src/main/java/org/mapfish/print/test/util/ImageSimilarity.java b/core/src/main/java/org/mapfish/print/test/util/ImageSimilarity.java
index 46e8afb471..3b128eac2d 100644
--- a/core/src/main/java/org/mapfish/print/test/util/ImageSimilarity.java
+++ b/core/src/main/java/org/mapfish/print/test/util/ImageSimilarity.java
@@ -360,7 +360,7 @@ public void assertSimilarity(final File actualFile, final double maxDistance) th
    * @throws IOException if the image could not be written.
    */
   public void assertSimilarity(final BufferedImage actualImage) throws IOException {
-    assertSimilarity(actualImage, 1);
+    assertSimilarity(actualImage, 0);
   }
 
   /**