diff --git a/conf/bleedingEdge.neon b/conf/bleedingEdge.neon
index c48f5cf179..d31bfe3029 100644
--- a/conf/bleedingEdge.neon
+++ b/conf/bleedingEdge.neon
@@ -22,3 +22,4 @@ parameters:
 		listType: true
 		missingMagicSerializationRule: true
 		nullContextForVoidReturningFunctions: true
+		unescapeStrings: true
diff --git a/conf/config.neon b/conf/config.neon
index b0676c34a7..5b2e00f632 100644
--- a/conf/config.neon
+++ b/conf/config.neon
@@ -52,6 +52,7 @@ parameters:
 		listType: false
 		missingMagicSerializationRule: false
 		nullContextForVoidReturningFunctions: false
+		unescapeStrings: false
 	fileExtensions:
 		- php
 	checkAdvancedIsset: false
@@ -263,6 +264,7 @@ parametersSchema:
 		listType: bool()
 		missingMagicSerializationRule: bool()
 		nullContextForVoidReturningFunctions: bool()
+		unescapeStrings: bool()
 	])
 	fileExtensions: listOf(string())
 	checkAdvancedIsset: bool()
@@ -507,6 +509,8 @@ services:
 
 	-
 		class: PHPStan\PhpDocParser\Parser\ConstExprParser
+		arguments:
+			unescapeStrings: %featureToggles.unescapeStrings%
 
 	-
 		class: PHPStan\PhpDocParser\Parser\PhpDocParser
diff --git a/src/DependencyInjection/ValidateIgnoredErrorsExtension.php b/src/DependencyInjection/ValidateIgnoredErrorsExtension.php
index 756d1a7bd2..18779e8b51 100644
--- a/src/DependencyInjection/ValidateIgnoredErrorsExtension.php
+++ b/src/DependencyInjection/ValidateIgnoredErrorsExtension.php
@@ -63,7 +63,7 @@ public function loadConfiguration(): void
 			$parser,
 			new TypeStringResolver(
 				new Lexer(),
-				new TypeParser(new ConstExprParser()),
+				new TypeParser(new ConstExprParser($builder->parameters['featureToggles']['unescapeStrings'])),
 				new TypeNodeResolver(
 					new DirectTypeNodeResolverExtensionRegistryProvider(
 						new class implements TypeNodeResolverExtensionRegistry {