fix windows builds

diff --git a/src/expr/statistics_registry.h b/src/expr/statistics_registry.h
index 3feb0d5d75ff52846866994ebbfefc3c37e2ac34..3225f66729800069aba3070270ab271b02f8915b 100644 (file)
--- a/src/expr/statistics_registry.h
+++ b/src/expr/statistics_registry.h
@@ -32,6 +32,7 @@
 
 #include "base/exception.h"
 #include "expr/statistics.h"
+#include "lib/clock_gettime.h"
 
 namespace CVC4 {