diff --git a/tinyterm.go b/tinyterm.go
index 9625fc4..bff54ae 100644
--- a/tinyterm.go
+++ b/tinyterm.go
@@ -208,6 +208,7 @@ func (t *Terminal) putchar(b byte) {
 				// CUF: Cursor Forward
 			case 'D':
 				// CUB: Cursor Back
+				t.cursorBack()
 			case 'E':
 				// CNL: Cursor Next Line
 			case 'F':
@@ -314,6 +315,12 @@ func (t *Terminal) drawchar(b byte) {
 	t.next += 1
 }
 
+func (t *Terminal) cursorBack() {
+	if t.next > 0 {
+		t.next -= 1
+	}
+}
+
 func (t *Terminal) cr() {
 }