diff --git a/docs/src/main/asciidoc/http-reference.adoc b/docs/src/main/asciidoc/http-reference.adoc
index 2cfaedb2023eb..7eb51f4ac75e0 100644
--- a/docs/src/main/asciidoc/http-reference.adoc
+++ b/docs/src/main/asciidoc/http-reference.adoc
@@ -208,7 +208,7 @@ The following properties are supported.
 [cols="<m,<m,<2",options="header"]
 |===
 |Property Name|Default|Description
-|quarkus.http.limits.max-body-size| `unlimited` |The maximum size of request body.
+|quarkus.http.limits.max-body-size| `10240K` |The maximum size of request body.
 |quarkus.http.limits.max-header-size|`2OK`|The maximum length of all headers.
 |===
 
diff --git a/extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/ServerLimitsConfig.java b/extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/ServerLimitsConfig.java
index d19b190219035..169fbb209926a 100644
--- a/extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/ServerLimitsConfig.java
+++ b/extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/ServerLimitsConfig.java
@@ -16,9 +16,9 @@ public class ServerLimitsConfig {
 
     /**
      * The maximum size of a request body.
-     * Default: no limit.
+     * Default: 10240K.
      */
-    @ConfigItem
+    @ConfigItem(defaultValue = "10240K")
     public Optional<MemorySize> maxBodySize;
 
     /**