diff --git a/src/tools/utils/editorOperationUtils.ts b/src/tools/utils/editorOperationUtils.ts
index 4c4db1a..08f71c9 100644
--- a/src/tools/utils/editorOperationUtils.ts
+++ b/src/tools/utils/editorOperationUtils.ts
@@ -51,7 +51,7 @@ function tryIgnoreLockedCodeTextForOperation (
   const splitText: string[] = []
   const uneditableRangesText = uneditableRangesInOperationRange.map(range => model.getValueInRange(range))
   let currentRange: number = 0
-  let remainingText: string = normalizeStringLineBreaks(operationText)
+  let remainingText: string = normalizeStringLineBreaks(operationText, model.getEOL())
   while (remainingText.length > 0 && currentRange < uneditableRangesText.length) {
     const rangeText = uneditableRangesText[currentRange]
     if (rangeText != null && rangeText !== '') {
diff --git a/src/tools/utils/stringUtils.ts b/src/tools/utils/stringUtils.ts
index 7091cb0..ef235c2 100644
--- a/src/tools/utils/stringUtils.ts
+++ b/src/tools/utils/stringUtils.ts
@@ -1,3 +1,3 @@
-export function normalizeStringLineBreaks (str: string, lineBreakCharacter: string = '\n'): string {
-  return str.replaceAll(/\r?\n|\r/g, lineBreakCharacter)
+export function normalizeStringLineBreaks (str: string, lineBreakCharacter: string): string {
+  return str.replace(/\r\n|\r|\n/g, lineBreakCharacter)
 }