diff --git a/vhdbuilder/scripts/linux/ubuntu/tool_installs_ubuntu.sh b/vhdbuilder/scripts/linux/ubuntu/tool_installs_ubuntu.sh
index bdf84270bd6..424f6bff1ea 100755
--- a/vhdbuilder/scripts/linux/ubuntu/tool_installs_ubuntu.sh
+++ b/vhdbuilder/scripts/linux/ubuntu/tool_installs_ubuntu.sh
@@ -218,7 +218,7 @@ installFIPS() {
     done
 
     echo "enabling ua fips-updates..."
-    retrycmd_if_failure 5 10 1200 echo y | ua enable fips-updates || exit $ERR_UA_ENABLE_FIPS
+    retrycmd_if_failure 5 10 1200 yes | ua enable fips-updates || exit $ERR_UA_ENABLE_FIPS
 }
 
 relinkResolvConf() {