diff --git a/s187/s186.png b/s187/s186.png
deleted file mode 100644
index 4b3c6b02..00000000
Binary files a/s187/s186.png and /dev/null differ
diff --git a/s188/s188.pyde b/s188/s188.pyde
index 00d383db..6e0c303f 100644
--- a/s188/s188.pyde
+++ b/s188/s188.pyde
@@ -1,6 +1,6 @@
 # Alexandre B A Villares - https://abav.lugaralgum.com/sketch-a-day
 SKETCH_NAME = "s188"  # 20180705
-OUTPUT = ".png"
+OUTPUT = ".gif"
 
 from gif_export_wrapper import *
 add_library('gifAnimation')
diff --git a/s189/gif_export_wrapper.py b/s189/gif_export_wrapper.py
new file mode 100644
index 00000000..800dad81
--- /dev/null
+++ b/s189/gif_export_wrapper.py
@@ -0,0 +1,38 @@
+"""
+Alexandre B A Villares http://abav.lugaralgum.com - GPL v3 
+
+A helper for the Processing gifAnimation library (https://github.com/jordanorelli)
+ported to Processing 3 by 01010101 (https://github.com/01010101)
+Download the library from https://github.com/01010101/GifAnimation/archive/master.zip
+This helper was inspired by an example by Art Simon https://github.com/APCSPrinciples/AnimatedGIF/
+
+Put  at the start of your sketch:
+   add_library('gifAnimation')
+   from gif_exporter import gif_export
+and at the end of draw():
+    gif_export(GifMaker)
+"""
+
+def gif_export(GifMaker,             # gets a reference to the library
+               filename="exported",  # .gif will be added
+               repeat=0,             # 0 makes it an "endless" animation
+               quality=128,          # quality range 0 - 255
+               delay=170,            # this is quick
+               finish=False):            # 0 will stop on keyPressed or frameCount >= 100000
+    global gifExporter
+    try:
+        gifExporter
+    except NameError:
+        gifExporter = GifMaker(this, filename + ".gif")
+        gifExporter.setRepeat(repeat)
+        gifExporter.setQuality(quality)
+        gifExporter.setDelay(delay)
+        gif_export._frame = frameCount
+        print("gif start")
+
+    gifExporter.addFrame()
+    if finish:
+        gifExporter.finish()
+        print("gif saved")
+        del(gifExporter)
+