diff --git a/agent/Makefile b/agent/Makefile
index de703355..22b55dd7 100644
--- a/agent/Makefile
+++ b/agent/Makefile
@@ -52,7 +52,7 @@ else
 endif
 
 %.1: %.rst
-	$(PANDOC) $< > $@
+	$(PANDOC) -t man $< > $@
 
 %.1.gz: %.1
 	gzip -f $<