diff --git a/Base/usr/share/man/man1/du.md b/Base/usr/share/man/man1/du.md
index d4a7717859..a51bda3eed 100644
--- a/Base/usr/share/man/man1/du.md
+++ b/Base/usr/share/man/man1/du.md
@@ -21,7 +21,7 @@ $ du [files...]
 * `-t size`, `--threshold size`: Exclude entries smaller than size if positive, or entries greater than size if negative
 * `--time time-type`: Show time of time time-type of any file in the directory, or any of its subdirectories. Available choices: mtime, modification, ctime, status, use, atime, access
 * `--exclude pattern`: Exclude files that match pattern
-* `-X file, --exclude_from`: Exclude files that match any pattern in file
+* `-X file, --exclude-from`: Exclude files that match any pattern in file
 
 ## Arguments
 
diff --git a/Userland/Utilities/du.cpp b/Userland/Utilities/du.cpp
index 96560ce294..81c816d115 100644
--- a/Userland/Utilities/du.cpp
+++ b/Userland/Utilities/du.cpp
@@ -103,7 +103,7 @@ ErrorOr<void> parse_args(Main::Arguments arguments, Vector<String>& files, DuOpt
     args_parser.add_option(du_option.threshold, "Exclude entries smaller than size if positive, or entries greater than size if negative", "threshold", 't', "size");
     args_parser.add_option(move(time_option));
     args_parser.add_option(pattern, "Exclude files that match pattern", "exclude", 0, "pattern");
-    args_parser.add_option(exclude_from, "Exclude files that match any pattern in file", "exclude_from", 'X', "file");
+    args_parser.add_option(exclude_from, "Exclude files that match any pattern in file", "exclude-from", 'X', "file");
     args_parser.add_option(du_option.block_size, "Outputs file sizes as the required blocks with the given size (defaults to 1024)", "block-size", 'B', "size");
     args_parser.add_option(move(block_size_1k_option));
     args_parser.add_positional_argument(files_to_process, "File to process", "file", Core::ArgsParser::Required::No);