diff --git a/contrib/blossom/concorde97/INCLUDE/machdefs.h b/contrib/blossom/concorde97/INCLUDE/machdefs.h
index fe026136a92fb09543c2e6d6c9f63ac84e5a96d5..76ee000d8f5f31ef3fbb323686956472f13a39fa 100644
--- a/contrib/blossom/concorde97/INCLUDE/machdefs.h
+++ b/contrib/blossom/concorde97/INCLUDE/machdefs.h
@@ -18,6 +18,7 @@
 #include <assert.h>
 #include <time.h>
 #undef CC_ZEIT_TIMES
+#define CC_ZEIT_DUMMY
 #endif
 
 #ifdef  CCSYS_STANDARD_KNR