diff --git a/src/Knp/Snappy/AbstractGenerator.php b/src/Knp/Snappy/AbstractGenerator.php
index 53e1594..1131739 100644
--- a/src/Knp/Snappy/AbstractGenerator.php
+++ b/src/Knp/Snappy/AbstractGenerator.php
@@ -510,9 +510,11 @@ protected function createTemporaryFile($content = null, $extension = null)
 
         if (null !== $content) {
             \file_put_contents($filename, $content);
-            $this->temporaryFiles[] = $filename;
         }
 
+        // track temp file even if we don't write to it, the method calling this creation may write to it
+        $this->temporaryFiles[] = $filename;
+
         return $filename;
     }
 
diff --git a/tests/Knp/Snappy/AbstractGeneratorTest.php b/tests/Knp/Snappy/AbstractGeneratorTest.php
index 8c97ed8..8a0a016 100644
--- a/tests/Knp/Snappy/AbstractGeneratorTest.php
+++ b/tests/Knp/Snappy/AbstractGeneratorTest.php
@@ -888,7 +888,7 @@ public function testCleanupEmptyTemporaryFiles(): void
         $create->invoke($generator, null, null);
 
         $files = new ReflectionProperty($generator, 'temporaryFiles');
-        $this->assertCount(0, $files->getValue($generator));
+        $this->assertCount(1, $files->getValue($generator));
 
         $remove = new ReflectionMethod($generator, 'removeTemporaryFiles');
         $remove->invoke($generator);