diff --git a/src/Nazara/Renderer/Context.cpp b/src/Nazara/Renderer/Context.cpp
index 79e3dd0b8..6a072a776 100644
--- a/src/Nazara/Renderer/Context.cpp
+++ b/src/Nazara/Renderer/Context.cpp
@@ -27,7 +27,7 @@ namespace
 
 	std::vector<NzContext*> contexts;
 
-	void CALLBACK DebugCallback(unsigned int source, unsigned int type, unsigned int id, unsigned int severity, int length, const char* message, void* userParam)
+	void CALLBACK DebugCallback(unsigned int source, unsigned int type, unsigned int id, unsigned int severity, int length, const char* message, const void* userParam)
 	{
 		NazaraUnused(length);