diff --git a/src/4.advanced_opengl/1.1.depth_testing/depth_testing.cpp b/src/4.advanced_opengl/1.1.depth_testing/depth_testing.cpp
index fa95232..70040c3 100644
--- a/src/4.advanced_opengl/1.1.depth_testing/depth_testing.cpp
+++ b/src/4.advanced_opengl/1.1.depth_testing/depth_testing.cpp
@@ -166,7 +166,7 @@ int main()
     // shader configuration
     // --------------------
     shader.use();
-    shader.setInt("ourTexture", 0);
+    shader.setInt("texture1", 0);
 
     // render loop
     // -----------