diff --git a/create-featurenet/action.yml b/create-featurenet/action.yml
index 7b02b4e..d7dfb4b 100644
--- a/create-featurenet/action.yml
+++ b/create-featurenet/action.yml
@@ -127,7 +127,8 @@ runs:
           echo "!!! Invalid sudo-account-id"
           exit 1
         fi
-        if [[ ! '${{ inputs.finality-version }}' =~ ^[0-9]+$ ]]; then
+        if [[ '${{ inputs.finality-version }}' != "" && \
+           ! '${{ inputs.finality-version }}' =~ ^[0-9]+$ ]]; then
           echo "!!! finality-version must be a cardinal number"
           exit 1
         fi