diff --git a/include/utils/Renderer/RendererOpenGL/RendererOpenGL.h b/include/utils/Renderer/RendererOpenGL/RendererOpenGL.h
index 85f3b74..22a7479 100644
--- a/include/utils/Renderer/RendererOpenGL/RendererOpenGL.h
+++ b/include/utils/Renderer/RendererOpenGL/RendererOpenGL.h
@@ -26,7 +26,7 @@ namespace Archimedes {
             void render(std::list<std::function<void()>> cmdList, int& w, int& h) {
 
                 glViewport(0, 0, w, h);
-
+                glClearColor(0.2, 0.2, 0.4, 1);
                 glClear(GL_COLOR_BUFFER_BIT);
 
                 for(auto f : cmdList)
diff --git a/modules/Archimedes-Modules/TestTriangle/TestTriangle.cpp b/modules/Archimedes-Modules/TestTriangle/TestTriangle.cpp
index 995428d..0c223e2 100644
--- a/modules/Archimedes-Modules/TestTriangle/TestTriangle.cpp
+++ b/modules/Archimedes-Modules/TestTriangle/TestTriangle.cpp
@@ -47,6 +47,7 @@ void TestTriangle::onLoad() {
             glBindVertexArray(vao);
             // 3. now draw the object 
             glDrawArrays(GL_TRIANGLES, 0, 3);
+            glBindVertexArray(0);
     });
 
     rcmd_it = --wm->getRenderer()->getCmdList().end()++;
@@ -63,16 +64,40 @@ void TestTriangle::onLoad() {
     glShaderSource(vs, 1, &vertexShaderSource, NULL);
     glCompileShader(vs);
 
+    glGetShaderiv(vs, GL_COMPILE_STATUS, &success);
+
+    if(!success) {
+        std::cout << "shader linking failed!" << std::endl;
+        std::abort();
+    };
+
+
     fs = glCreateShader(GL_FRAGMENT_SHADER);
     glShaderSource(fs, 1, &fragShaderSource, NULL);
     glCompileShader(fs);
 
+    glGetShaderiv(fs, GL_COMPILE_STATUS, &success);
+
+    if(!success) {
+        std::cout << "shader linking failed!" << std::endl;
+        std::abort();
+    };
+
+
     program = glCreateProgram();
 
     glAttachShader(program, vs);
     glAttachShader(program, fs);
     glLinkProgram(program);
 
+    glGetProgramiv(program, GL_LINK_STATUS, &success);
+
+    if(!success) {
+        std::cout << "shader linking failed!" << std::endl;
+        std::abort();
+    };
+
+
     glDeleteShader(vs);
     glDeleteShader(fs);