diff --git a/ControlModule/control_module.h b/ControlModule/control_module.h
index f223387..96c01a3 100644
--- a/ControlModule/control_module.h
+++ b/ControlModule/control_module.h
@@ -1,3 +1,5 @@
+#pragma once
+
 class ControlModule
 {
 private:
diff --git a/Input/input.h b/Input/input.h
index b035858..39834ee 100644
--- a/Input/input.h
+++ b/Input/input.h
@@ -1,3 +1,5 @@
+#pragma once
+
 #include <iostream>
 #include <vector>
 #include <string>
diff --git a/Interpreter/interpreter.h b/Interpreter/interpreter.h
index eb22804..89b48c6 100644
--- a/Interpreter/interpreter.h
+++ b/Interpreter/interpreter.h
@@ -1,3 +1,5 @@
+#pragma once
+
 class Interpreter
 {
 private:
diff --git a/IntersectionHandler/intersection_handler.h b/IntersectionHandler/intersection_handler.h
index 6c634ad..2f18184 100644
--- a/IntersectionHandler/intersection_handler.h
+++ b/IntersectionHandler/intersection_handler.h
@@ -1,3 +1,5 @@
+#pragma once
+
 class IntersectionHandler
 {
 private:
diff --git a/Utils/utils.h b/Utils/utils.h
index dfc5590..d837d3c 100644
--- a/Utils/utils.h
+++ b/Utils/utils.h
@@ -1,3 +1,5 @@
+#pragma once
+
 class LFRPoint
 {
 private:
diff --git a/lfr.h b/lfr.h
index 9497024..3ac3434 100644
--- a/lfr.h
+++ b/lfr.h
@@ -1,3 +1,5 @@
+#pragma once
+
 #include <iostream>
 #include <future>
 #include <thread>