diff --git a/oviewer/draw.go b/oviewer/draw.go
index 4bddfa0b..441b8559 100644
--- a/oviewer/draw.go
+++ b/oviewer/draw.go
@@ -394,7 +394,7 @@ func (root *Root) columnDelimiterHighlight(line LineC) {
 		switch {
 		case c == 0 && lStart == 0:
 			iStart = lStart
-			iEnd = indexes[0][1] - 1
+			iEnd = indexes[0][1] - len(m.ColumnDelimiter)
 			if iEnd < 0 {
 				iEnd = 0
 			}
diff --git a/oviewer/utils_test.go b/oviewer/utils_test.go
index 7aed676e..51aa15bd 100644
--- a/oviewer/utils_test.go
+++ b/oviewer/utils_test.go
@@ -454,8 +454,8 @@ func Test_allIndex(t *testing.T) {
 				reg:    nil,
 			},
 			want: [][]int{
-				{1, 2},
-				{5, 6},
+				{1, 4},
+				{5, 8},
 			},
 		},
 		{