diff --git a/src/Output/QRGdImage.php b/src/Output/QRGdImage.php
index 3125672a0..c695daf94 100644
--- a/src/Output/QRGdImage.php
+++ b/src/Output/QRGdImage.php
@@ -163,6 +163,8 @@ public function dump(string|null $file = null):string|GdImage{
 			// scale down to the expected size
 			$this->image    = imagescale($this->image, ($this->length / 10), ($this->length / 10));
 			$this->upscaled = false;
+			// Reset scaled and length values after rescaling image to prevent issues with subclasses that use the output from dump()
+			$this->setMatrixDimensions();
 		}
 
 		// set transparency after scaling, otherwise it would be undone