diff --git a/tasks/push-snapshot/push-snapshot.yaml b/tasks/push-snapshot/push-snapshot.yaml
index f0e3f77e9..d830ea2a6 100644
--- a/tasks/push-snapshot/push-snapshot.yaml
+++ b/tasks/push-snapshot/push-snapshot.yaml
@@ -117,13 +117,11 @@ spec:
           oras_args=()
           if [[ "$media_type" == "application/vnd.docker.distribution.manifest.list.v2+json" ]]\
             || [[ "$media_type" == "application/vnd.oci.image.index.v1+json" ]]; then
-            # need to add separately or else the args get treated as 1 argument
-            # and oras complains about "Error: unknown flag: --platform linux/amd64"
-            oras_args+=("--platform")
-            oras_args+=("$os/$arch")
+            oras_args+=("--platform $os/$arch")
           fi
 
-          origin_digest=$(oras resolve --registry-config "$AUTH_FILE" "${oras_args[@]}" "${containerImage}" 2>/dev/null)
+          # we do not use oras_args here since we want to get the manifest index image digest
+          origin_digest=$(oras resolve --registry-config "$AUTH_FILE" "${containerImage}" 2>/dev/null)
 
           RESULTS_JSON=$(jq --arg i "$i" --argjson arches "$arches" --argjson oses "$oses" --arg name "$name" \
             --arg sha "$origin_digest" \
@@ -142,8 +140,8 @@ spec:
             # Calculate the source container image based on the provided container image
             sourceContainer="${source_repo}:${source_tag}"
             # Check if the source container exists
-            source_container_digest=$(oras resolve --registry-config "$AUTH_FILE" "${oras_args[@]}" \
-              "${sourceContainer}" 2>/dev/null)
+            source_container_digest=$(oras resolve --registry-config "$AUTH_FILE" \
+              "${sourceContainer}" ${oras_args[@]} 2>/dev/null)
 
             if [ -z "$source_container_digest" ] ; then
               echo "Error: Source container ${sourceContainer} not found!"