diff --git a/docs/man/man1/dmd.1 b/docs/man/man1/dmd.1
index b2d59b0b9c..5907e8cbef 100644
--- a/docs/man/man1/dmd.1
+++ b/docs/man/man1/dmd.1
@@ -22,6 +22,10 @@ Object files to link in
 .IP file.a
 Library files to link in
 
+.IP @cmdfile
+A file to read more command-line arguments from,
+which may contain sh-style single-line comments
+
 .IP -c
 Compile only, do not link