diff --git a/doc/mkdwarfs.md b/doc/mkdwarfs.md
index 1491b7ea..6ed7ef8a 100644
--- a/doc/mkdwarfs.md
+++ b/doc/mkdwarfs.md
@@ -2,9 +2,9 @@
 
 ## SYNOPSIS
 
-`mkdwarfs` `-i` *path* `-o` *file* [*options*...]  
-`mkdwarfs` `--input-list=`*file*|`-` `-o` *file* [*options*...]  
-`mkdwarfs` `-i` *file* `-o` *file* `--recompress` [*options*...]
+`mkdwarfs` `-i` *path* `-o` *file*|`-` [*options*...]  
+`mkdwarfs` `--input-list=`*file*|`-` `-o` *file*|`-` [*options*...]  
+`mkdwarfs` `-i` *file* `-o` *file*|`-` `--recompress` [*options*...]
 
 ## DESCRIPTION
 
diff --git a/src/mkdwarfs_main.cpp b/src/mkdwarfs_main.cpp
index d8b63189..239d0436 100644
--- a/src/mkdwarfs_main.cpp
+++ b/src/mkdwarfs_main.cpp
@@ -431,10 +431,11 @@ int mkdwarfs_main(int argc, sys_char** argv, iolayer const& iol) {
         "path to root directory or source filesystem")
     ("input-list",
         po_sys_value<sys_string>(&input_list_str),
-        "file containing list of file paths relative to root directory")
+        "file containing list of file paths relative to root directory "
+        "or - for stdin")
     ("output,o",
         po_sys_value<sys_string>(&output_str),
-        "filesystem output name")
+        "filesystem output name or - for stdout")
     ("force,f",
         po::value<bool>(&force_overwrite)->zero_tokens(),
         "force overwrite of existing output image")