diff --git a/extensions/vertx/deployment/src/test/java/io/quarkus/vertx/DuplicatedContextTest.java b/extensions/vertx/deployment/src/test/java/io/quarkus/vertx/DuplicatedContextTest.java
index b1e615b69dfba..95ecb523ed3ed 100644
--- a/extensions/vertx/deployment/src/test/java/io/quarkus/vertx/DuplicatedContextTest.java
+++ b/extensions/vertx/deployment/src/test/java/io/quarkus/vertx/DuplicatedContextTest.java
@@ -19,6 +19,7 @@
 import org.junit.jupiter.api.extension.RegisterExtension;
 
 import io.quarkus.test.QuarkusUnitTest;
+import io.quarkus.vertx.core.runtime.context.VertxContextSafetyToggle;
 import io.smallrye.common.annotation.Blocking;
 import io.smallrye.common.vertx.ContextLocals;
 import io.smallrye.common.vertx.VertxContext;
@@ -147,12 +148,14 @@ public static class MyConsumers {
         @ConsumeEvent(value = "context")
         Uni<String> receive(String data) {
             Assertions.assertTrue(Thread.currentThread().getName().contains("vert.x-eventloop"));
+            VertxContextSafetyToggle.validateContextIfExists("Not marked as safe", "Not marked as safe");
             return process(data);
         }
 
         private Uni<String> process(String id) {
             Context context = Vertx.currentContext();
             Assertions.assertTrue(VertxContext.isOnDuplicatedContext());
+            VertxContextSafetyToggle.validateContextIfExists("Not marked as safe", "Not marked as safe");
 
             String val = ContextLocals.get("key", null);
             Assertions.assertNull(val);
@@ -168,6 +171,7 @@ private Uni<String> process(String id) {
                                 Assertions.assertEquals("hey!", msg);
                                 Assertions.assertEquals(id, ContextLocals.get("key", null));
                                 Assertions.assertSame(Vertx.currentContext(), context);
+                                VertxContextSafetyToggle.validateContextIfExists("Not marked as safe", "Not marked as safe");
                                 return "OK-" + ContextLocals.get("key", null);
                             }).toCompletionStage());
         }
@@ -176,6 +180,8 @@ private Uni<String> process(String id) {
         @Blocking
         String receiveBlocking(String data) {
             Assertions.assertFalse(Thread.currentThread().getName().contains("vert.x-eventloop"));
+            Assertions.assertTrue(VertxContext.isOnDuplicatedContext());
+            VertxContextSafetyToggle.validateContextIfExists("Not marked as safe", "Not marked as safe");
             return process(data).await().atMost(Duration.ofSeconds(4));
         }
 
@@ -183,6 +189,7 @@ String receiveBlocking(String data) {
         public void consumeSend(String s) {
             Context context = Vertx.currentContext();
             Assertions.assertTrue(VertxContext.isOnDuplicatedContext());
+            VertxContextSafetyToggle.validateContextIfExists("Not marked as safe", "Not marked as safe");
 
             String val = ContextLocals.get("key", null);
             Assertions.assertNull(val);
@@ -195,6 +202,7 @@ public void consumeSend(String s) {
         public void consumeSendBlocking(String s) {
             Context context = Vertx.currentContext();
             Assertions.assertTrue(VertxContext.isOnDuplicatedContext());
+            VertxContextSafetyToggle.validateContextIfExists("Not marked as safe", "Not marked as safe");
 
             String val = ContextLocals.get("key", null);
             Assertions.assertNull(val);
@@ -207,6 +215,7 @@ public void consumeSendBlocking(String s) {
         public void consumePublish1(String s) {
             Context context = Vertx.currentContext();
             Assertions.assertTrue(VertxContext.isOnDuplicatedContext());
+            VertxContextSafetyToggle.validateContextIfExists("Not marked as safe", "Not marked as safe");
 
             String val = ContextLocals.get("key", null);
             Assertions.assertNull(val);
@@ -219,6 +228,7 @@ public void consumePublish1(String s) {
         public void consumePublish2(String s) {
             Context context = Vertx.currentContext();
             Assertions.assertTrue(VertxContext.isOnDuplicatedContext());
+            VertxContextSafetyToggle.validateContextIfExists("Not marked as safe", "Not marked as safe");
 
             String val = ContextLocals.get("key", null);
             Assertions.assertNull(val);
@@ -232,6 +242,7 @@ public void consumePublish2(String s) {
         public void consumePublishBlocking1(String s) {
             Context context = Vertx.currentContext();
             Assertions.assertTrue(VertxContext.isOnDuplicatedContext());
+            VertxContextSafetyToggle.validateContextIfExists("Not marked as safe", "Not marked as safe");
 
             String val = ContextLocals.get("key", null);
             Assertions.assertNull(val);
@@ -245,6 +256,7 @@ public void consumePublishBlocking1(String s) {
         public void consumePublishBlocking2(String s) {
             Context context = Vertx.currentContext();
             Assertions.assertTrue(VertxContext.isOnDuplicatedContext());
+            VertxContextSafetyToggle.validateContextIfExists("Not marked as safe", "Not marked as safe");
 
             String val = ContextLocals.get("key", null);
             Assertions.assertNull(val);
diff --git a/extensions/vertx/runtime/src/main/java/io/quarkus/vertx/runtime/VertxRecorder.java b/extensions/vertx/runtime/src/main/java/io/quarkus/vertx/runtime/VertxRecorder.java
index e23a3b7139e0c..9fdfd9def6ec9 100644
--- a/extensions/vertx/runtime/src/main/java/io/quarkus/vertx/runtime/VertxRecorder.java
+++ b/extensions/vertx/runtime/src/main/java/io/quarkus/vertx/runtime/VertxRecorder.java
@@ -1,6 +1,7 @@
 package io.quarkus.vertx.runtime;
 
 import static io.quarkus.vertx.core.runtime.context.VertxContextSafetyToggle.setContextSafe;
+import static io.quarkus.vertx.core.runtime.context.VertxContextSafetyToggle.setCurrentContextSafe;
 
 import java.lang.reflect.InvocationTargetException;
 import java.util.ArrayList;
@@ -120,7 +121,11 @@ public void handle(Promise<Object> event) {
                                         }
                                     }, invoker.isOrdered(), null);
                                 } else {
-                                    // Will run on the context used for the consumer registration
+                                    // Will run on the context used for the consumer registration.
+                                    // It's a duplicated context, but we need to mark it as safe.
+                                    // The safety comes from the fact that it's instantiated by Vert.x for every
+                                    // message.
+                                    setCurrentContextSafe(true);
                                     try {
                                         invoker.invoke(m);
                                     } catch (Exception e) {