diff --git a/hmi/scripts/qr_code_decoder b/hmi/scripts/qr_code_decoder
index b7be36f..88fa2df 100755
--- a/hmi/scripts/qr_code_decoder
+++ b/hmi/scripts/qr_code_decoder
@@ -125,9 +125,10 @@ class QRCodeDecode(AbstractHMIServer):
         self.reset_server()
 
         rospy.loginfo(f"QR code data: {qr_code_data}")
-        semantics = parse_sentence(qr_code_data, grammar, target)
+        sentence = qr_code_data.lower()
+        semantics = parse_sentence(sentence, grammar, target)
         rospy.loginfo(f"Parsed semantics: {semantics}")
-        result = HMIResult(qr_code_data, semantics)
+        result = HMIResult(sentence, semantics)
 
         return result
 
diff --git a/hmi/tools/continue_gui b/hmi/tools/continue_gui
index 9c523a6..f018c9f 100755
--- a/hmi/tools/continue_gui
+++ b/hmi/tools/continue_gui
@@ -1,4 +1,4 @@
-#! /usr/bin/python
+#! /usr/bin/env python
 
 from typing import Callable, Mapping