diff --git a/magnifier/demos.py b/magnifier/demos.py
index b7f89a5..2fc2a3c 100644
--- a/magnifier/demos.py
+++ b/magnifier/demos.py
@@ -126,8 +126,8 @@ START:
 
 """
 
-	def get_demo4_code(self):
-		return """
+    def get_demo4_code(self):
+        return """
 ; Demo 4: Sumuj liczby na switchach
 ; Rekomendowana prędkość: 1+