diff --git a/src/termkey/driver-ti.c b/src/termkey/driver-ti.c
index 69bc3684d3..00a7066796 100644
--- a/src/termkey/driver-ti.c
+++ b/src/termkey/driver-ti.c
@@ -21,6 +21,8 @@
 #include <string.h>
 #ifndef _WIN32
 # include <unistd.h>
+#else
+# include <io.h>
 #endif
 #include <sys/types.h>
 #include <sys/stat.h>
diff --git a/src/termkey/termkey.c b/src/termkey/termkey.c
index a839533982..832e5a9a9e 100644
--- a/src/termkey/termkey.c
+++ b/src/termkey/termkey.c
@@ -7,6 +7,8 @@
 # include <poll.h>
 # include <unistd.h>
 # include <strings.h>
+#else
+# include <io.h>
 #endif
 #include <string.h>