1 files changed, 4 insertions, 0 deletions
diff --git a/libmdoc.h b/libmdoc.h
index 1d8657bd..c03d4a8d 100644
--- a/libmdoc.h
+++ b/libmdoc.h
@@ -16,6 +16,10 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+struct	roff_node;
+struct	roff_man;
+struct	mdoc_arg;
+
 #define	MACRO_PROT_ARGS	struct roff_man *mdoc, \
 			enum roff_tok tok, \
 			int line, \