diff --git a/memory/build/mozjemalloc.cpp b/memory/build/mozjemalloc.cpp
index 196c3259bea6..d3f1f8c5f878 100644
--- a/memory/build/mozjemalloc.cpp
+++ b/memory/build/mozjemalloc.cpp
@@ -4851,7 +4851,7 @@ MOZ_EXPORT void* (*__memalign_hook)(size_t, size_t) = memalign_impl;
 #endif
 
 #ifdef XP_WIN
-void* _recalloc(void* aPtr, size_t aCount, size_t aSize) {
+MOZ_EXPORT void* _recalloc(void* aPtr, size_t aCount, size_t aSize) {
   size_t oldsize = aPtr ? AllocInfo::Get(aPtr).Size() : 0;
   CheckedInt<size_t> checkedSize = CheckedInt<size_t>(aCount) * aSize;
 
@@ -4876,7 +4876,7 @@ void* _recalloc(void* aPtr, size_t aCount, size_t aSize) {
 
 // This impl of _expand doesn't ever actually expand or shrink blocks: it
 // simply replies that you may continue using a shrunk block.
-void* _expand(void* aPtr, size_t newsize) {
+MOZ_EXPORT void* _expand(void* aPtr, size_t newsize) {
   if (AllocInfo::Get(aPtr).Size() >= newsize) {
     return aPtr;
   }
@@ -4884,5 +4884,7 @@ void* _expand(void* aPtr, size_t newsize) {
   return nullptr;
 }
 
-size_t _msize(void* aPtr) { return DefaultMalloc::malloc_usable_size(aPtr); }
+MOZ_EXPORT size_t _msize(void* aPtr) {
+  return DefaultMalloc::malloc_usable_size(aPtr);
+}
 #endif
diff --git a/third_party/sqlite3/src/moz.build b/third_party/sqlite3/src/moz.build
index b152b0e30df0..54572d20f5f4 100644
--- a/third_party/sqlite3/src/moz.build
+++ b/third_party/sqlite3/src/moz.build
@@ -67,11 +67,10 @@ if CONFIG['OS_TARGET'] == 'Android':
     # default to user readable only to fit Android security model
     DEFINES['SQLITE_DEFAULT_FILE_PERMISSIONS'] = '0600'
 
-# Force using malloc_usable_size when building with jemalloc because _msize
-# causes assertions on Win64. See bug 719579.
-if CONFIG['OS_ARCH'] == 'WINNT' and CONFIG['MOZ_MEMORY']:
-    DEFINES['HAVE_MALLOC_USABLE_SIZE'] = True
-    DEFINES['SQLITE_WITHOUT_MSIZE'] = True
+# Force using _msize on mingw, as sqlite3 only enables it with MSVC.
+if CONFIG['OS_TARGET'] == 'WINNT' and CONFIG['CC_TYPE'] != 'clang-cl':
+    DEFINES['SQLITE_USE_MALLOC_H'] = True
+    DEFINES['SQLITE_USE_MSIZE'] = True
 
 # Omit unused functions to save some library footprint.
 DEFINES['SQLITE_OMIT_DEPRECATED'] = True