diff --git a/nets/upconv/download.sh b/nets/upconv/download.sh
index 613f4de..50557cd 100755
--- a/nets/upconv/download.sh
+++ b/nets/upconv/download.sh
@@ -16,7 +16,7 @@
 f=release_deepsim_v0.zip
 
 if [ ! -f "${f}" ]; then
-  wget http://lmb.informatik.uni-freiburg.de/resources/binaries/arxiv2016_alexnet_inversion_with_gans/release_deepsim_v0.zip
+  wget --no-check-certificate http://lmb.informatik.uni-freiburg.de/resources/binaries/arxiv2016_alexnet_inversion_with_gans/release_deepsim_v0.zip
 fi
 
 echo "Extracting..."