diff --git a/tests/server/sockfilt.c b/tests/server/sockfilt.c
index 8acad96111a01d3e6a377f7dd21492144fa63649..7e143d5eb7e6f51eb2eb11784615ce12499157d0 100644
--- a/tests/server/sockfilt.c
+++ b/tests/server/sockfilt.c
@@ -93,6 +93,11 @@
 #include <netdb.h>
 #endif
 
+#ifdef WIN32
+#include <conio.h>
+#include <fcntl.h>
+#endif
+
 #define ENABLE_CURLX_PRINTF
 /* make the curlx header define all printf() functions to use the curlx_*
    versions instead */