--- src/cbang/time/Timer.h	2020-01-20 01:56:06.000000000 +0100
+++ src/cbang/time/Timer.h	2020-04-06 09:05:08.440687355 +0200
@@ -38,9 +38,7 @@
 #endif // _WIN32
 
 
-struct timeval;
-struct timespec;
-
+#include <sys/time.h>
 
 namespace cb {
   /// Time events or access current system time