diff --git a/tests/download_emulators.sh b/tests/download_emulators.sh
index 41f918b467..cc13482106 100755
--- a/tests/download_emulators.sh
+++ b/tests/download_emulators.sh
@@ -5,7 +5,7 @@ SITE="https://firmware.corp.sldev.cz/upgrade_tests/"
 cd "$(dirname "$0")"
 
 # download all emulators without index files, without directories and only if not present
-wget -e robots=off --no-verbose --no-clobber --no-parent --cut-dirs=2 --no-host-directories --recursive --reject "index.html*" -P emulators/ $SITE
+wget --no-check-certificate -e robots=off --no-verbose --no-clobber --no-parent --cut-dirs=2 --no-host-directories --recursive --reject "index.html*" -P emulators/ $SITE
 
 chmod u+x emulators/trezor-emu-*