diff --git a/src/bettola.cpp b/src/bettola.cpp
index 6812fb0..8ec71b5 100644
--- a/src/bettola.cpp
+++ b/src/bettola.cpp
@@ -150,8 +150,8 @@ void Bettola::setup_triangle(void) {
   float vertices[] = {
     /* Should be a triangle??!?? */
     -0.5f, -0.5f, 0.0f,
-    0.5f, -0.5f, 0.0f,
-    0.0f, 0.5f, 0.0f,
+     0.5f, -0.5f, 0.0f,
+    -0.0f,  0.5f, 0.0f,
   };
 
   glGenVertexArrays(1, &_vao);