1 files changed, 2 insertions, 3 deletions

diff --git a/src/minibuf.c b/src/minibuf.c
index 162738bacda..7b34a307976 100644
--- a/src/minibuf.c
+++ b/src/minibuf.c
@@ -2450,10 +2450,9 @@ positions in STR.  */)
 
     /* Go backwards to build match positions list. */
     Lisp_Object matches = Fcons (make_fixnum (lastcol), Qnil);
-    for (int i = patlen - 2, l = lastcol - 1; i >= 0; --i)
+    for (int i = patlen - 2, l = lastcol; i >= 0; --i)
       {
-        while (l >= 0 && MAT (M, i, l) > MAT (D, i, l))
-          --l;
+        do --l; while (l >= 0 && MAT (M, i, l) >= MAT (D, i, l));
         matches = Fcons (make_fixnum (l), matches);
       }