diff --git a/storage/innobase/btr/btr0cur.c b/storage/innobase/btr/btr0cur.c
index ef684be8e67..378b9020c0d 100644
--- a/storage/innobase/btr/btr0cur.c
+++ b/storage/innobase/btr/btr0cur.c
@@ -3248,7 +3248,7 @@ btr_estimate_n_rows_in_range_on_level(
 	performance with this code which is just an estimation. If we read
 	this many pages before reaching slot2->page_no then we estimate the
 	average from the pages scanned so far */
-	#define N_PAGES_READ_LIMIT	10
+#	define N_PAGES_READ_LIMIT	10
 
 	page_no = slot1->page_no;
 	level = slot1->page_level;