diff --git a/client/implementation-vertx/src/main/java/io/smallrye/graphql/client/vertx/dynamic/VertxDynamicGraphQLClient.java b/client/implementation-vertx/src/main/java/io/smallrye/graphql/client/vertx/dynamic/VertxDynamicGraphQLClient.java
index d77e8d159..5c90b3469 100644
--- a/client/implementation-vertx/src/main/java/io/smallrye/graphql/client/vertx/dynamic/VertxDynamicGraphQLClient.java
+++ b/client/implementation-vertx/src/main/java/io/smallrye/graphql/client/vertx/dynamic/VertxDynamicGraphQLClient.java
@@ -460,7 +460,7 @@ private Uni<Response> executeSingleResultOperationOverWebsocket(JsonObject json)
             webSocketHandler().subscribe().with(handler -> {
                 handlerRef.set(handler);
                 operationId.set(handler.executeUni(json, rawEmitter));
-            });
+            }, rawEmitter::fail);
         });
         return rawUni
                 .onCancellation().invoke(() -> {
diff --git a/client/implementation-vertx/src/main/java/io/smallrye/graphql/client/vertx/typesafe/VertxTypesafeGraphQLClientProxy.java b/client/implementation-vertx/src/main/java/io/smallrye/graphql/client/vertx/typesafe/VertxTypesafeGraphQLClientProxy.java
index 8d5970b70..1a789634a 100644
--- a/client/implementation-vertx/src/main/java/io/smallrye/graphql/client/vertx/typesafe/VertxTypesafeGraphQLClientProxy.java
+++ b/client/implementation-vertx/src/main/java/io/smallrye/graphql/client/vertx/typesafe/VertxTypesafeGraphQLClientProxy.java
@@ -215,7 +215,7 @@ private Uni<Object> executeSingleResultOperationOverWebsocket(MethodInvocation m
             webSocketHandler().subscribe().with((handler) -> {
                 handlerRef.set(handler);
                 operationId.set(handler.executeUni(request, rawEmitter));
-            });
+            }, rawEmitter::fail);
         });
         return rawUni
                 .onCancellation().invoke(() -> {