diff --git a/src/preprocessor.rs b/src/preprocessor.rs
index 64600419..2380e7f9 100644
--- a/src/preprocessor.rs
+++ b/src/preprocessor.rs
@@ -66,6 +66,7 @@ pub fn replace_nonprintable(input: &[u8], tab_width: usize) -> String {
                 // tab
                 '\t' => {
                     let tab_stop = tab_width - ((line_idx - 1) % tab_width);
+                    line_idx = 0;
                     if tab_stop == 1 {
                         output.push('↹');
                     } else {
diff --git a/tests/integration_tests.rs b/tests/integration_tests.rs
index 948ec457..b75cbafe 100644
--- a/tests/integration_tests.rs
+++ b/tests/integration_tests.rs
@@ -1227,7 +1227,7 @@ fn show_all_tabstops() {
         .assert()
         .success()
         .stdout(
-            "├──┤1├┤2├──┤3├┤4␊
+            "├──┤1├─┤2├─┤3├─┤4␊
 1├─┤?␊
 22├┤?␊
 333↹?␊
@@ -1250,7 +1250,7 @@ fn show_all_tabstops_long() {
         .assert()
         .success()
         .stdout(
-            "├──────┤1├────┤2├──┤3├┤4␊
+            "├──────┤1├─────┤2├─────┤3├─────┤4␊
 1├─────┤?␊
 22├────┤?␊
 333├───┤?␊