diff --git a/README b/README
index cb49aa1..7b73a1c 100644
--- a/README
+++ b/README
@@ -3832,16 +3832,8 @@
 	Load Address: 0x00000000
 	Entry Point:  0x00000000
 
-The "dumpimage" is a tool to disassemble images built by mkimage. Its "-i"
-option performs the converse operation of the mkimage's second form (the "-d"
-option). Given an image built by mkimage, the dumpimage extracts a "data file"
-from the image:
-
-	tools/dumpimage -i image -T type -p position data_file
-	  -i ==> extract from the 'image' a specific 'data_file'
-	  -T ==> set image type to 'type'
-	  -p ==> 'position' (starting at 0) of the 'data_file' inside the 'image'
-
+The "dumpimage" tool can be used to disassemble or list the contents of images
+built by mkimage. See dumpimage's help output (-h) for details.
 
 Installing a Linux Image:
 -------------------------
diff --git a/tools/imagetool.h b/tools/imagetool.h
index acbc48e..8726792 100644
--- a/tools/imagetool.h
+++ b/tools/imagetool.h
@@ -126,9 +126,9 @@
 					struct image_tool_params *);
 	/*
 	 * This function is used by the command to retrieve a component
-	 * (sub-image) from the image (i.e. dumpimage -i <image> -p <position>
-	 * <sub-image-name>).
-	 * Thus the code to extract a file from an image must be put here.
+	 * (sub-image) from the image (i.e. dumpimage -p <position>
+	 * -o <component-outfile> <image>). Thus the code to extract a file
+	 * from an image must be put here.
 	 *
 	 * Returns 0 if the file was successfully retrieved from the image,
 	 * or a negative value on error.