diff --git a/zlibWrapper/examples/zwrapbench.c b/zlibWrapper/examples/zwrapbench.c
index d2d6073f9..40e9ed557 100644
--- a/zlibWrapper/examples/zwrapbench.c
+++ b/zlibWrapper/examples/zwrapbench.c
@@ -17,6 +17,7 @@
 #include <stdio.h>       /* fprintf, fopen, ftello64 */
 #include <time.h>        /* clock_t, clock, CLOCKS_PER_SEC */
 #include <ctype.h>       /* toupper */
+#include <errno.h>       /* errno */
 
 #include "mem.h"
 #define ZSTD_STATIC_LINKING_ONLY