diff --git a/README.md b/README.md
index 4c55cd6..3cdeb97 100644
--- a/README.md
+++ b/README.md
@@ -827,7 +827,7 @@ to the complex number issue. The directory structure in my frozen modules
 directory matched that of the source: the directory had `gui` and `drivers`
 subdirectories with their subdirectories intact (where they had necessary
 contents). This is the resultant tree from my frozen directory:  
-![Image](images/esp8266_tree.png) 
+![Image](images/esp8266_tree.JPG) 
 
 I erased flash, built and installed the new firmware. Finally I copied
 `esp8266_setup.py` to `/pyboard/color_setup.py`. This could have been frozen
diff --git a/images/esp8266_tree.JPG b/images/esp8266_tree.JPG
new file mode 100644
index 0000000..6a2c95c
Binary files /dev/null and b/images/esp8266_tree.JPG differ
diff --git a/images/esp8266_tree.png b/images/esp8266_tree.png
deleted file mode 100644
index 915df5f..0000000
Binary files a/images/esp8266_tree.png and /dev/null differ