diff --git a/dom/cache/FileUtils.cpp b/dom/cache/FileUtils.cpp
index ff556bfc326..298a5773353 100644
--- a/dom/cache/FileUtils.cpp
+++ b/dom/cache/FileUtils.cpp
@@ -43,7 +43,7 @@ namespace {
 
 // Const variable for generate padding size.
 // XXX This will be tweaked to something more meaningful in Bug 1383656.
-const int64_t kRoundUpNumber = 20480;
+const int64_t kRoundUpNumber = 131072;
 
 // At the moment, the encrypted stream block size is assumed to be unchangeable
 // between encrypting and decrypting blobs. This assumptions holds as long as we
diff --git a/dom/fetch/InternalResponse.cpp b/dom/fetch/InternalResponse.cpp
index f75b9597d97..55e0d918ef7 100644
--- a/dom/fetch/InternalResponse.cpp
+++ b/dom/fetch/InternalResponse.cpp
@@ -23,7 +23,7 @@ namespace {
 
 // Const variable for generate padding size
 // XXX This will be tweaked to something more meaningful in Bug 1383656.
-const uint32_t kMaxRandomNumber = 102400;
+const uint32_t kMaxRandomNumber = 1048576;
 
 }  // namespace