1 files changed, 1 insertions, 0 deletions

diff --git a/xdelta3/testing/test.h b/xdelta3/testing/test.h
index f7c2ced..d1f1a22 100644
--- a/xdelta3/testing/test.h
+++ b/xdelta3/testing/test.h
@@ -5,6 +5,7 @@ extern "C" {
 #include "../xdelta3-internal.h"
 }
 
+#include <unistd.h>
 #include <math.h>
 #include <string>