diff --git a/openbsd-compat/openbsd-compat.h b/openbsd-compat/openbsd-compat.h
index 542ae58dd..64c7cdf1c 100644
--- a/openbsd-compat/openbsd-compat.h
+++ b/openbsd-compat/openbsd-compat.h
@@ -49,6 +49,7 @@
 #include "fnmatch.h"
 
 #if defined(HAVE_LOGIN_CAP) && !defined(HAVE_LOGIN_GETPWCLASS)
+# include <login_cap.h>
 # define login_getpwclass(pw) login_getclass(pw->pw_class)
 #endif