diff --git a/core/src/processing/opengl/PGL.java b/core/src/processing/opengl/PGL.java
index 8b471751c..96d7929b7 100644
--- a/core/src/processing/opengl/PGL.java
+++ b/core/src/processing/opengl/PGL.java
@@ -942,6 +942,8 @@ public abstract class PGL {
 
 
   protected void restoreFirstFrame() {
+    if (firstFrame == null) return;
+
     IntBuffer tex = allocateIntBuffer(1);
     genTextures(1, tex);