diff --git a/extensions/grpc/runtime/src/main/java/io/quarkus/grpc/auth/GrpcSecurityInterceptor.java b/extensions/grpc/runtime/src/main/java/io/quarkus/grpc/auth/GrpcSecurityInterceptor.java
index c7586173caebb..e0b40636adcf5 100644
--- a/extensions/grpc/runtime/src/main/java/io/quarkus/grpc/auth/GrpcSecurityInterceptor.java
+++ b/extensions/grpc/runtime/src/main/java/io/quarkus/grpc/auth/GrpcSecurityInterceptor.java
@@ -77,7 +77,6 @@ public <ReqT, RespT> ServerCall.Listener<ReqT> interceptCall(ServerCall<ReqT, Re
                 try {
                     AuthenticationRequest authenticationRequest = securityMechanism.createAuthenticationRequest(metadata);
                     Context context = Vertx.currentContext();
-                    boolean onEventLoopThread = Context.isOnEventLoopThread();
 
                     if (authenticationRequest != null) {
                         Uni<SecurityIdentity> auth = identityProviderManager
@@ -85,7 +84,7 @@ public <ReqT, RespT> ServerCall.Listener<ReqT> interceptCall(ServerCall<ReqT, Re
                                 .emitOn(new Executor() {
                                     @Override
                                     public void execute(Runnable command) {
-                                        if (onEventLoopThread) {
+                                        if (Context.isOnEventLoopThread()) {
                                             context.runOnContext(new Handler<>() {
                                                 @Override
                                                 public void handle(Void event) {