diff --git a/src/tests/tests.sh b/src/tests/tests.sh
index 52e89101..79a407c3 100755
--- a/src/tests/tests.sh
+++ b/src/tests/tests.sh
@@ -32,7 +32,7 @@ PROG="../yubihsm-shell --connector=${DEFAULT_CONNECTOR_URL}"
 if [ "x$(uname)" = "xFreeBSD" ]; then
   DECODE="b64decode -pr"
 else
-  DECODE="base64 --decode"
+  DECODE="base64 --decode -i"
 fi
 
 echo "Hello World!" >"$DATA"