diff --git a/chapter03_gluon-basics/use-gpu.md b/chapter03_gluon-basics/use-gpu.md
index bba53b4270cfe1048f489656873d2d2a037e0837..2692d54724b3b954d970e72caeb69557480de505 100644
--- a/chapter03_gluon-basics/use-gpu.md
+++ b/chapter03_gluon-basics/use-gpu.md
@@ -66,7 +66,6 @@ import sys
 try:
     nd.array([1,2,3], ctx=mx.gpu(1))
 except mx.MXNetError as err: 
-    haha = err
     sys.stderr.write(str(err))
 ```