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-rw-r--r--diff-tree.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/diff-tree.c b/diff-tree.c
index 5b9467d58b..0dd3cdacb2 100644
--- a/diff-tree.c
+++ b/diff-tree.c
@@ -395,7 +395,7 @@ static int diff_tree_stdin(char *line)
return diff_tree_commit(commit, line);
}
-static char *diff_tree_usage =
+static const char diff_tree_usage[] =
"git-diff-tree [--stdin] [-m] [-s] [-v] [--pretty] [-t] "
"[<common diff options>] <tree-ish> <tree-ish>"
COMMON_DIFF_OPTIONS_HELP;