diff --git a/src/stdafx.h b/src/stdafx.h
index 4c9ca0d92c..b9d46e0d1e 100644
--- a/src/stdafx.h
+++ b/src/stdafx.h
@@ -301,12 +301,14 @@
 #   define OTTD_PRINTF64 "%I64d"
 #   define OTTD_PRINTF64U "%I64u"
 #   define OTTD_PRINTFHEX64 "%I64x"
+#   define OTTD_PRINTFHEX64PAD "%016I64x"
 #   define PRINTF_SIZE "%Iu"
 #   define PRINTF_SIZEX "%IX"
 #else
 #   define OTTD_PRINTF64 "%lld"
 #   define OTTD_PRINTF64U "%llu"
 #   define OTTD_PRINTFHEX64 "%llx"
+#   define OTTD_PRINTFHEX64PAD "%016llx"
 #   define PRINTF_SIZE "%zu"
 #   define PRINTF_SIZEX "%zX"
 #endif