diff --git a/mozilla/js/js2/numerics.cpp b/mozilla/js/js2/numerics.cpp
index c94a7fd864e..58d4edbddf5 100644
--- a/mozilla/js/js2/numerics.cpp
+++ b/mozilla/js/js2/numerics.cpp
@@ -358,7 +358,7 @@ void JS::BigInt::allocate(uint lgGrossSize)
 	    FREE_DTOA_LOCK(0);
     } else {
 	    FREE_DTOA_LOCK(0);
-        w = static_cast<uint32 *>(STD::malloc(max(grossSize*sizeof(uint32), uint32(sizeof(uint32 *)))));
+        w = static_cast<uint32 *>(STD::malloc(max(uint32(grossSize*sizeof(uint32)), uint32(sizeof(uint32 *)))));
         if (!w) {
 		    std::bad_alloc outOfMemory;
 		    throw outOfMemory;
diff --git a/mozilla/js2/src/numerics.cpp b/mozilla/js2/src/numerics.cpp
index c94a7fd864e..58d4edbddf5 100644
--- a/mozilla/js2/src/numerics.cpp
+++ b/mozilla/js2/src/numerics.cpp
@@ -358,7 +358,7 @@ void JS::BigInt::allocate(uint lgGrossSize)
 	    FREE_DTOA_LOCK(0);
     } else {
 	    FREE_DTOA_LOCK(0);
-        w = static_cast<uint32 *>(STD::malloc(max(grossSize*sizeof(uint32), uint32(sizeof(uint32 *)))));
+        w = static_cast<uint32 *>(STD::malloc(max(uint32(grossSize*sizeof(uint32)), uint32(sizeof(uint32 *)))));
         if (!w) {
 		    std::bad_alloc outOfMemory;
 		    throw outOfMemory;