diff --git a/src/defs.h b/src/defs.h
index 7e5bf08..5f1efb3 100644
--- a/src/defs.h
+++ b/src/defs.h
@@ -39,6 +39,9 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #define TO_RAIDANS(angleDegrees) (angleDegrees * PI / 180.0)
 #define TO_DEGREES(angleRadians) (angleRadians * 180.0 / PI)
 
+#define SAVE_FILENAME "game.save"
+#define CONFIG_FILENAME "config.json"
+
 #define SCREEN_WIDTH 	1280
 #define SCREEN_HEIGHT 	720
 
diff --git a/src/main.c b/src/main.c
index 1ef7a21..30feb82 100644
--- a/src/main.c
+++ b/src/main.c
@@ -183,7 +183,7 @@ static void handleArguments(int argc, char *argv[])
 	
 	if (!testingMission)
 	{
-		if (fileExists(getSaveFilePath("game.save")))
+		if (fileExists(getSaveFilePath(SAVE_FILENAME)))
 		{
 			loadGame();
 		}
diff --git a/src/system/init.c b/src/system/init.c
index cceae6e..ebdfe93 100644
--- a/src/system/init.c
+++ b/src/system/init.c
@@ -207,7 +207,7 @@ static void loadConfig(void)
 	cJSON *root, *controlsJSON, *node;
 	char *text, *configFilename;
 
-	configFilename = getSaveFilePath("config.json");
+	configFilename = getSaveFilePath(CONFIG_FILENAME);
 
 	if (fileExists(configFilename))
 	{
@@ -215,7 +215,7 @@ static void loadConfig(void)
 	}
 	else
 	{
-		text = readFile("data/app/config.json");
+		text = readFile("data/app/"CONFIG_FILENAME);
 	}
 
 	root = cJSON_Parse(text);
@@ -263,7 +263,7 @@ void saveConfig(void)
 	char *out, *configFilename;
 	cJSON *root, *controlsJSON, *keysJSON, *mouseJSON;
 
-	configFilename = getSaveFilePath("config.json");
+	configFilename = getSaveFilePath(CONFIG_FILENAME);
 
 	SDL_LogMessage(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO, "Saving config ...");
 
diff --git a/src/system/load.c b/src/system/load.c
index 0ca8612..1e527e8 100644
--- a/src/system/load.c
+++ b/src/system/load.c
@@ -30,7 +30,7 @@ void loadGame(void)
 	cJSON *root, *gameJSON;
 	char *text;
 
-	text = readFile(getSaveFilePath("game.save"));
+	text = readFile(getSaveFilePath(SAVE_FILENAME));
 	root = cJSON_Parse(text);
 
 	gameJSON = cJSON_GetObjectItem(root, "game");
diff --git a/src/system/save.c b/src/system/save.c
index e0bdb2b..3b568d2 100644
--- a/src/system/save.c
+++ b/src/system/save.c
@@ -46,7 +46,7 @@ void saveGame(void)
 
 	out = cJSON_Print(root);
 
-	writeFile(getSaveFilePath("game.save"), out);
+	writeFile(getSaveFilePath(SAVE_FILENAME), out);
 
 	cJSON_Delete(root);
 	free(out);