diff --git a/compiler/src/PhpScoper/StaticEasyPrefixer.php b/compiler/src/PhpScoper/StaticEasyPrefixer.php
index 4bb5f87e9d1..050217167fd 100644
--- a/compiler/src/PhpScoper/StaticEasyPrefixer.php
+++ b/compiler/src/PhpScoper/StaticEasyPrefixer.php
@@ -41,6 +41,6 @@ final class StaticEasyPrefixer
 
     public static function unPreSlashQuotedValues(string $content): string
     {
-        return Strings::replace($content, '#\'\\\\#', "'");
+        return Strings::replace($content, '#\'\\\\(\w|@)#', "'$1");
     }
 }
diff --git a/compiler/tests/PhpScoper/StaticEasyPrefixerTest.php b/compiler/tests/PhpScoper/StaticEasyPrefixerTest.php
index 660d88a9ee8..9b9db3bb100 100644
--- a/compiler/tests/PhpScoper/StaticEasyPrefixerTest.php
+++ b/compiler/tests/PhpScoper/StaticEasyPrefixerTest.php
@@ -36,5 +36,6 @@ final class StaticEasyPrefixerTest extends TestCase
     public function provideDataForSlashes(): Iterator
     {
         yield ["'\@ORM\Entity", "'@ORM\Entity"];
+        yield ["'\\", "'\\"];
     }
 }