--- nss/lib/libpkix/pkix/util/pkix_tools.h
+++ nss/lib/libpkix/pkix/util/pkix_tools.h
@@ -1458,8 +1458,8 @@
 
 extern PRLogModuleInfo *pkixLog;
 
-#define PKIX_MAGIC_HEADER           LL_INIT(0xFEEDC0FF, 0xEEFACADE)
-#define PKIX_MAGIC_HEADER_DESTROYED LL_INIT(0xBAADF00D, 0xDEADBEEF)
+#define PKIX_MAGIC_HEADER           LL_INIT(0xFEEDC0FFU, 0xEEFACADEU)
+#define PKIX_MAGIC_HEADER_DESTROYED LL_INIT(0xBAADF00DU, 0xDEADBEEFU)
 
 /* see source file for function documentation */