diff --git a/src/services/services.ts b/src/services/services.ts
index d5f63627471..70cc7e2e08d 100644
--- a/src/services/services.ts
+++ b/src/services/services.ts
@@ -3234,7 +3234,7 @@ namespace ts {
                 }
             }
 
-            return unescapeIdentifier(name);
+            return name;
         }
 
         function getCompletionData(fileName: string, position: number) {
@@ -4141,7 +4141,7 @@ namespace ts {
 
                     if (!uniqueNames[name]) {
                         uniqueNames[name] = name;
-                        const displayName = getCompletionEntryDisplayName(name, target, /*performCharacterChecks*/ true);
+                        const displayName = getCompletionEntryDisplayName(unescapeIdentifier(name), target, /*performCharacterChecks*/ true);
                         if (displayName) {
                             const entry = {
                                 name: displayName,
diff --git a/tests/cases/fourslash/codeCompletionEscaping.ts b/tests/cases/fourslash/codeCompletionEscaping.ts
index b8182307b7b..5061a87e5b6 100644
--- a/tests/cases/fourslash/codeCompletionEscaping.ts
+++ b/tests/cases/fourslash/codeCompletionEscaping.ts
@@ -2,7 +2,8 @@
 
 // @Filename: a.js
 // @allowJs: true
-////__foo;/**/
+////___foo; __foo;/**/
 
 goTo.marker();
 verify.completionListContains("__foo", undefined, undefined, "warning");
+verify.completionListContains("___foo", undefined, undefined, "warning");