diff --git a/test/integration/suites/force-rotation-self-signed/15-verify-revoked-x509authority b/test/integration/suites/force-rotation-self-signed/15-verify-revoked-x509authority
index 2d4f85ce179..133f9e9be8c 100755
--- a/test/integration/suites/force-rotation-self-signed/15-verify-revoked-x509authority
+++ b/test/integration/suites/force-rotation-self-signed/15-verify-revoked-x509authority
@@ -1,7 +1,5 @@
 #!/bin/bash
 
-#!/bin/bash
-
 MAX_RETRIES=10
 RETRY_DELAY=2 # seconds between retries
 
@@ -19,7 +17,8 @@ for agent in "${agents[@]}"; do
           -socketPath /opt/spire/sockets/workload_api.sock \
           -write /tmp; then
 
-            bundleCount=$(docker compose exec -T $agent openssl x509 -in /tmp/bundle.0.pem | grep -c "BEGIN CERTIFICATE")
+            bundleCount=$(docker compose exec -T leafA-agent \
+		    openssl storeutl -noout -text -certs /tmp/bundle.0.pem | grep -c "Certificate:")
             if [ $bundleCount -eq 1 ]; then
                 log-debug "Validation successful for $agent: There is exactly one certificate in the chain."
                 break