diff --git a/core/src/processing/opengl/PGraphicsOpenGL.java b/core/src/processing/opengl/PGraphicsOpenGL.java
index 63d74195d..54b419219 100644
--- a/core/src/processing/opengl/PGraphicsOpenGL.java
+++ b/core/src/processing/opengl/PGraphicsOpenGL.java
@@ -3115,7 +3115,7 @@ public class PGraphicsOpenGL extends PGraphics {
                       ambientColor, specularColor, emissiveColor, shininess);
     inGeo.setNormal(normalX, normalY, normalZ);
     inGeo.addRect(x1, y1, x2, y2, tl, tr, br, bl, stroke);
-    endShape();
+    endShape(CLOSE);
   }