diff --git a/contrib/blossom/concorde97/INCLUDE/machdefs.h b/contrib/blossom/concorde97/INCLUDE/machdefs.h
index 76ee000d8f5f31ef3fbb323686956472f13a39fa..250c57ab020df390c0194242987c9763ee263e62 100644
--- a/contrib/blossom/concorde97/INCLUDE/machdefs.h
+++ b/contrib/blossom/concorde97/INCLUDE/machdefs.h
@@ -9,12 +9,12 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <math.h>
-#include <strings.h>
+//#include <string>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <errno.h>
-#include <unistd.h>
+//#include <unistd.h>
 #include <assert.h>
 #include <time.h>
 #undef CC_ZEIT_TIMES