diff --git a/Source/version.c b/Source/version.c
index fa54a561..321f770a 100644
--- a/Source/version.c
+++ b/Source/version.c
@@ -7,7 +7,11 @@
 
 #include "version.h"
 
-const char version_date[] = __DATE__;
+#ifndef BUILD_DATE
+#define BUILD_DATE __DATE__
+#endif
+const char version_date[] = BUILD_DATE;
+#undef BUILD_DATE
 
 //----------------------------------------------------------------------------
 //