diff --git a/content/canvas/test/reftest/black.html b/content/canvas/test/reftest/black.html
new file mode 100644
index 000000000000..d2c721b1d545
--- /dev/null
+++ b/content/canvas/test/reftest/black.html
@@ -0,0 +1,9 @@
+
+
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+
+
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+
diff --git a/content/canvas/test/reftest/black.png b/content/canvas/test/reftest/black.png
deleted file mode 100644
index 7e3e4b537479..000000000000
Binary files a/content/canvas/test/reftest/black.png and /dev/null differ
diff --git a/content/canvas/test/reftest/reftest.list b/content/canvas/test/reftest/reftest.list
index ea6da04e9e69..b83f86aa44dd 100644
--- a/content/canvas/test/reftest/reftest.list
+++ b/content/canvas/test/reftest/reftest.list
@@ -137,8 +137,9 @@ pref(webgl.force-layers-readback,true) random-if(B2G) == webgl-color-test.html?r
# Check alpha behavior:
fuzzy-if(B2G,256,83) == webgl-color-alpha-test.html?colorVal=1.0&alphaVal=1.0&nogl wrapper.html?colors.png
fuzzy-if(B2G,256,83) == webgl-color-alpha-test.html?colorVal=1.0&alphaVal=1.0 wrapper.html?colors.png
-fails-if(B2G) == webgl-color-alpha-test.html?colorVal=0.0&alphaVal=1.0&nogl wrapper.html?black.png
-fails-if(B2G) == webgl-color-alpha-test.html?colorVal=0.0&alphaVal=1.0 wrapper.html?black.png
+# These tests don't use wrapper.html, as there appear to be invalidation issues with black.png and async image decoding - Bug 803299
+== webgl-color-alpha-test.html?colorVal=0.0&alphaVal=1.0&nogl black.html
+== webgl-color-alpha-test.html?colorVal=0.0&alphaVal=1.0 black.html
fuzzy-if(B2G,256,83) == webgl-color-alpha-test.html?colorVal=1.0&alphaVal=0.0&nogl wrapper.html?colors.png
fuzzy-if(B2G,256,83) == webgl-color-alpha-test.html?colorVal=1.0&alphaVal=0.0 wrapper.html?colors.png