diff --git a/modules/xz-embedded/moz.build b/modules/xz-embedded/moz.build
index fa1e5fc468..9806dca1ea 100644
--- a/modules/xz-embedded/moz.build
+++ b/modules/xz-embedded/moz.build
@@ -29,4 +29,7 @@ elif '86' in CONFIG['TARGET_CPU']:
 
 DEFINES['XZ_USE_CRC64'] = 1
 
+if CONFIG['OS_ARCH'] == 'WINNT':
+    USE_STATIC_LIBS = True
+
 Library('xz-embedded')