diff --git a/include/game.hpp b/include/game.hpp
index 7f59e95..40ab0a2 100644
--- a/include/game.hpp
+++ b/include/game.hpp
@@ -1,5 +1,5 @@
-#ifndef __PTF_GAME_HPP__
-#define __PTF_GAME_HPP__
+#ifndef __SKIZZLE_GAME_HPP__
+#define __SKIZZLE_GAME_HPP__
 
 #include "level.hpp"
 #include "widget_timer.hpp"
diff --git a/include/gravity_block.hpp b/include/gravity_block.hpp
index 27378a0..4d2e077 100644
--- a/include/gravity_block.hpp
+++ b/include/gravity_block.hpp
@@ -1,5 +1,5 @@
-#ifndef __PTF_GRAVITY_BLOCK_HPP__
-#define __PTF_GRAVITY_BLOCK_HPP__
+#ifndef __SKIZZLE_GRAVITY_BLOCK_HPP__
+#define __SKIZZLE_GRAVITY_BLOCK_HPP__
 
 #include <SFML/Graphics.hpp>
 #include <memory>
diff --git a/include/menu.hpp b/include/menu.hpp
index b75b809..b12a599 100644
--- a/include/menu.hpp
+++ b/include/menu.hpp
@@ -1,5 +1,5 @@
-#ifndef __PTF_MENU_HPP__
-#define __PTF_MENU_HPP__
+#ifndef __SKIZZLE_MENU_HPP__
+#define __SKIZZLE_MENU_HPP__
 
 #include "state.hpp"
 #include <functional>
diff --git a/include/player.hpp b/include/player.hpp
index 3fa412b..f3671bf 100644
--- a/include/player.hpp
+++ b/include/player.hpp
@@ -1,5 +1,5 @@
-#ifndef __PTF_PLAYER_HPP__
-#define __PTF_PLAYER_HPP__
+#ifndef __SKIZZLE_PLAYER_HPP__
+#define __SKIZZLE_PLAYER_HPP__
 
 #include <SFML/Graphics.hpp>
 #include <memory>
diff --git a/include/rules.hpp b/include/rules.hpp
index dfb5ba5..8d01210 100644
--- a/include/rules.hpp
+++ b/include/rules.hpp
@@ -1,5 +1,5 @@
-#ifndef __PTF_RULES_HPP__
-#define __PTF_RULES_HPP__
+#ifndef __SKIZZLE_RULES_HPP__
+#define __SKIZZLE_RULES_HPP__
 
 #include "state.hpp"
 
diff --git a/include/switch_block.hpp b/include/switch_block.hpp
index b76b20c..bacaa71 100644
--- a/include/switch_block.hpp
+++ b/include/switch_block.hpp
@@ -1,5 +1,5 @@
-#ifndef __PTF_SWITCH_BLOCK_HPP__
-#define __PTF_SWITCH_BLOCK_HPP__
+#ifndef __SKIZZLE_SWITCH_BLOCK_HPP__
+#define __SKIZZLE_SWITCH_BLOCK_HPP__
 
 #include <SFML/Graphics.hpp>
 #include <memory>
diff --git a/include/widget_timer.hpp b/include/widget_timer.hpp
index 6ea9600..1d78169 100644
--- a/include/widget_timer.hpp
+++ b/include/widget_timer.hpp
@@ -1,5 +1,5 @@
-#ifndef __PTF_UTIL_WIDGET_TIMER_HPP__
-#define __PTF_UTIL_WIDGET_TIMER_HPP__
+#ifndef __SKIZZLE_UTIL_WIDGET_TIMER_HPP__
+#define __SKIZZLE_UTIL_WIDGET_TIMER_HPP__
 
 #include <SFML/Graphics.hpp>
 #include <functional>