diff --git a/Documentation/manual.txt b/Documentation/manual.txt
index 2f07350..d4e99e3 100644
--- a/Documentation/manual.txt
+++ b/Documentation/manual.txt
@@ -674,4 +674,8 @@ The fdtdump program prints a readable version of a flat device tree file.
 
 The syntax of the fdtdump command line is:
 
-    fdtdump <DTB-file-name>
+    fdtdump [options] <DTB-file-name>
+
+Where options are:
+    -d,--debug          Dump debug information while decoding the file
+    -s,--scan           Scan for an embedded fdt in given file