diff --git a/comex/src-ofi/log.h b/comex/src-ofi/log.h
index 048e6a77c..74390042b 100644
--- a/comex/src-ofi/log.h
+++ b/comex/src-ofi/log.h
@@ -13,6 +13,12 @@
 #include <stdlib.h>
 #include <sys/syscall.h>
 #include <time.h>
+#ifndef __USE_MISC
+#define __USE_MISC
+#endif
+#ifndef __USE_XOPEN2K
+#define __USE_XOPEN2K
+#endif
 #include <unistd.h>
 
 #include "env.h"