diff --git a/diff.h b/diff.h
index 82254396f95..8ba85c5e605 100644
--- a/diff.h
+++ b/diff.h
@@ -265,6 +265,7 @@ struct diff_options {
 	 * postimage of the diff_queue.
 	 */
 	const char *pickaxe;
+	unsigned pickaxe_opts;
 
 	/* -I<regex> */
 	regex_t **ignore_regex;
@@ -304,8 +305,6 @@ struct diff_options {
 	/* The output format used when `diff_flush()` is run. */
 	int output_format;
 
-	unsigned pickaxe_opts;
-
 	/* Affects the way detection logic for complete rewrites, renames and
 	 * copies.
 	 */