diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt
index b7c3afeb3a..3ad6404dbc 100644
--- a/Documentation/diff-options.txt
+++ b/Documentation/diff-options.txt
@@ -43,10 +43,19 @@ endif::git-format-patch[]
 
 ifndef::git-format-patch[]
 --raw::
-	Generate the raw format.
+ifndef::git-log[]
+	Generate the diff in raw format.
 ifdef::git-diff-core[]
 	This is the default.
 endif::git-diff-core[]
+endif::git-log[]
+ifdef::git-log[]
+	For each commit, show a summary of changes using the raw diff
+	format. See the "RAW OUTPUT FORMAT" section of
+	linkgit:git-diff[1]. This is different from showing the log
+	itself in raw format, which you can achieve with
+	`--format=raw`.
+endif::git-log[]
 endif::git-format-patch[]
 
 ifndef::git-format-patch[]
diff --git a/Documentation/pretty-formats.txt b/Documentation/pretty-formats.txt
index dcf7429a47..dc865cbb27 100644
--- a/Documentation/pretty-formats.txt
+++ b/Documentation/pretty-formats.txt
@@ -79,7 +79,10 @@ stored in the commit object.  Notably, the SHA-1s are
 displayed in full, regardless of whether --abbrev or
 --no-abbrev are used, and 'parents' information show the
 true parent commits, without taking grafts or history
-simplification into account.
+simplification into account. Note that this format affects the way
+commits are displayed, but not the way the diff is shown e.g. with
+`git log --raw`. To get full object names in a raw diff format,
+use `--no-abbrev`.
 
 * 'format:<string>'
 +