3 files changed, 6 insertions, 0 deletions
diff --git a/man.c b/man.c
index 486c352f..c303dd6c 100644
--- a/man.c
+++ b/man.c
@@ -14,6 +14,8 @@
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
+#include <sys/types.h>
+
 #include <assert.h>
 #include <ctype.h>
 #include <stdarg.h>
diff --git a/man_hash.c b/man_hash.c
index 6e9f2afb..572be63d 100644
--- a/man_hash.c
+++ b/man_hash.c
@@ -14,6 +14,8 @@
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
+#include <sys/types.h>
+
 #include <assert.h>
 #include <limits.h>
 #include <stdlib.h>
diff --git a/mdoc.c b/mdoc.c
index 48dedb0b..5b49227a 100644
--- a/mdoc.c
+++ b/mdoc.c
@@ -14,6 +14,8 @@
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
+#include <sys/types.h>
+
 #include <assert.h>
 #include <ctype.h>
 #include <stdarg.h>