diff --git a/src/urh/dev/gr/__init__.py b/src/urh/dev/gr/__init__.py
index e69de29b..1c9ed527 100644
--- a/src/urh/dev/gr/__init__.py
+++ b/src/urh/dev/gr/__init__.py
@@ -0,0 +1,3 @@
+import sys
+
+sys.dont_write_bytecode = True
diff --git a/src/urh/dev/native/__init__.py b/src/urh/dev/native/__init__.py
index e69de29b..1c9ed527 100644
--- a/src/urh/dev/native/__init__.py
+++ b/src/urh/dev/native/__init__.py
@@ -0,0 +1,3 @@
+import sys
+
+sys.dont_write_bytecode = True