diff --git a/ISLE/isleapp.cpp b/ISLE/isleapp.cpp
index f2205937..83a7927c 100644
--- a/ISLE/isleapp.cpp
+++ b/ISLE/isleapp.cpp
@@ -1404,9 +1404,9 @@ SDL_AppResult IsleApp::ParseArguments(int argc, char** argv)
 	return SDL_APP_CONTINUE;
 }
 
-void IsleApp::DisplayArgumentHelp(char* execName)
+void IsleApp::DisplayArgumentHelp(const char* p_execName)
 {
-	SDL_Log("Usage: %s [options]", execName);
+	SDL_Log("Usage: %s [options]", p_execName);
 	SDL_Log("Options:");
 	SDL_Log("	--ini <path>		Set custom path to .ini config");
 #ifdef ISLE_DEBUG
diff --git a/ISLE/isleapp.h b/ISLE/isleapp.h
index 4d8f811f..470a5a72 100644
--- a/ISLE/isleapp.h
+++ b/ISLE/isleapp.h
@@ -99,7 +99,7 @@ class IsleApp {
 	const CursorBitmap* m_cursorCurrentBitmap;
 	char* m_mediaPath;
 	MxFloat m_cursorSensitivity;
-	void DisplayArgumentHelp(char* execName);
+	void DisplayArgumentHelp(const char* p_execName);
 
 	char* m_iniPath;
 	MxFloat m_maxLod;