--- a/content/canvas/compiledtest/TestWebGLElementArrayCache.cpp
+++ b/content/canvas/compiledtest/TestWebGLElementArrayCache.cpp
@@ -123,17 +123,22 @@ int main(int argc, char *argv[])
 
   CheckSanity<uint8_t>();
   CheckSanity<uint16_t>();
 
   nsTArray<uint8_t> v, vsub;
   WebGLElementArrayCache b;
 
   for (int maxBufferSize = 1; maxBufferSize <= 4096; maxBufferSize *= 2) {
-    int repeat = std::min(maxBufferSize, 20);
+    // See bug 800612. We originally had | repeat = min(maxBufferSize, 20) |
+    // and a real bug was only caught on Windows and not on Linux due to rand()
+    // producing different values. In that case, the minimum value by which to replace
+    // this 20 to reproduce the bug on Linux, was 25. Replacing it with 64 should give
+    // us some comfort margin.
+    int repeat = std::min(maxBufferSize, 64);
     for (int i = 0; i < repeat; i++) {
       size_t size = RandomInteger<size_t>(1, maxBufferSize);
       MakeRandomVector(v, size);
       b.BufferData(v.Elements(), size);
       CheckValidate(b, 0, size);
 
       for (int j = 0; j < 16; j++) {
         for (int bufferSubDataCalls = 1; bufferSubDataCalls <= 8; bufferSubDataCalls *= 2) {