diff --git a/.changeset/pink-pianos-allow.md b/.changeset/pink-pianos-allow.md
new file mode 100644
index 000000000000..dbab099098cc
--- /dev/null
+++ b/.changeset/pink-pianos-allow.md
@@ -0,0 +1,5 @@
+---
+swc_common: patch
+---
+
+fix(common): Fix `StringInput.end_pos`
diff --git a/crates/swc_common/src/input.rs b/crates/swc_common/src/input.rs
index d42cccbd3e97..546eeec0ef9c 100644
--- a/crates/swc_common/src/input.rs
+++ b/crates/swc_common/src/input.rs
@@ -15,6 +15,7 @@ pub struct StringInput<'a> {
     orig: &'a str,
     /// Original start position.
     orig_start: BytePos,
+    orig_end: BytePos,
 }
 
 impl<'a> StringInput<'a> {
@@ -34,6 +35,7 @@ impl<'a> StringInput<'a> {
             orig: src,
             iter: src.chars(),
             orig_start: start,
+            orig_end: end,
         }
     }
 
@@ -55,7 +57,7 @@ impl<'a> StringInput<'a> {
     }
 
     pub fn end_pos(&self) -> BytePos {
-        self.last_pos
+        self.orig_end
     }
 }