diff --git a/expectations/gm/Test-Mac10.6-MacMini4.1-GeForce320M-x86-Release/expected-results.json b/expectations/gm/Test-Mac10.6-MacMini4.1-GeForce320M-x86-Release/expected-results.json
index 1ddf91c370..4499ded738 100644
--- a/expectations/gm/Test-Mac10.6-MacMini4.1-GeForce320M-x86-Release/expected-results.json
+++ b/expectations/gm/Test-Mac10.6-MacMini4.1-GeForce320M-x86-Release/expected-results.json
@@ -12295,9 +12295,9 @@
         ]
       ], 
       "bugs": [
-        1578
-      ], 
-      "reviewed-by-human": false
+        1100
+      ],
+      "ignore-failure": true
     }, 
     "tilemode_gradient_pdf-poppler.png": {
       "allowed-digests": [
@@ -12965,4 +12965,4 @@
       "reviewed-by-human": false
     }
   }
-}
\ No newline at end of file
+}