--- a/js/xpconnect/src/XPCJSRuntime.cpp
+++ b/js/xpconnect/src/XPCJSRuntime.cpp
@@ -3389,17 +3389,17 @@ XPCJSRuntime::XPCJSRuntime(nsXPConnect* 
     // On normal builds, the largest stack frame size we might encounter is
     // 9.0k (see above), so let's use a buffer of 9.0 * 3 * 10 = 270k.
     const size_t kStackQuota =  2 * kDefaultStackQuota;
     const size_t kTrustedScriptBuffer = 270 * 1024;
 #elif defined(XP_WIN)
     // 1MB is the default stack size on Windows, so use 900k.
     // Windows PGO stack frames have unfortunately gotten pretty large lately. :-(
     const size_t kStackQuota = 900 * 1024;
-    const size_t kTrustedScriptBuffer = (sizeof(size_t) == 8) ? 140 * 1024
+    const size_t kTrustedScriptBuffer = (sizeof(size_t) == 8) ? 160 * 1024
                                                               : 100 * 1024;
     // The following two configurations are linux-only. Given the numbers above,
     // we use 50k and 100k trusted buffers on 32-bit and 64-bit respectively.
 #elif defined(DEBUG)
     // Bug 803182: account for the 4x difference in the size of js::Interpret
     // between optimized and debug builds.
     // XXXbholley - Then why do we only account for 2x of difference?
     const size_t kStackQuota = 2 * kDefaultStackQuota;