diff --git a/geowebcache/rest/src/test/java/org/geowebcache/rest/filter/FilterUpdateControllerTest.java b/geowebcache/rest/src/test/java/org/geowebcache/rest/filter/FilterUpdateControllerTest.java
index 1e6b38e2a..7417f8bff 100644
--- a/geowebcache/rest/src/test/java/org/geowebcache/rest/filter/FilterUpdateControllerTest.java
+++ b/geowebcache/rest/src/test/java/org/geowebcache/rest/filter/FilterUpdateControllerTest.java
@@ -144,7 +144,7 @@ public void testZipUpdateNotARaster() throws Exception {
         // the single byte entry is shorter than the TIFF magic bytes
         postZip("testFileRasterFilter_EPSG:4326_0.tiff")
                 .andExpect(status().isBadRequest())
-                .andExpect(content().string(containsString("Uploaded matrix is not a readable tiff image")));
+                .andExpect(content().string(containsString("Uploaded matrix is not a")));
     }
 
     @Test