diff --git a/extensions/spring-cloud-config-client/runtime/src/main/java/io/quarkus/spring/cloud/config/client/runtime/VertxSpringCloudConfigGateway.java b/extensions/spring-cloud-config-client/runtime/src/main/java/io/quarkus/spring/cloud/config/client/runtime/VertxSpringCloudConfigGateway.java
index 30a1c78588211..fee1dc0966d97 100644
--- a/extensions/spring-cloud-config-client/runtime/src/main/java/io/quarkus/spring/cloud/config/client/runtime/VertxSpringCloudConfigGateway.java
+++ b/extensions/spring-cloud-config-client/runtime/src/main/java/io/quarkus/spring/cloud/config/client/runtime/VertxSpringCloudConfigGateway.java
@@ -2,7 +2,6 @@
 
 import static io.vertx.core.spi.resolver.ResolverProvider.DISABLE_DNS_RESOLVER_PROP_NAME;
 
-import java.io.ByteArrayOutputStream;
 import java.io.InputStream;
 import java.net.URI;
 import java.net.URISyntaxException;
@@ -168,14 +167,7 @@ private static byte[] storeBytes(Path keyStorePath)
     }
 
     private static byte[] allBytes(InputStream inputStream) throws Exception {
-        ByteArrayOutputStream buffer = new ByteArrayOutputStream();
-        int nRead;
-        byte[] data = new byte[1024];
-        while ((nRead = inputStream.read(data, 0, data.length)) != -1) {
-            buffer.write(data, 0, nRead);
-        }
-        buffer.flush();
-        return buffer.toByteArray();
+        return inputStream.readAllBytes();
     }
 
     private URI determineBaseUri(SpringCloudConfigClientConfig springCloudConfigClientConfig) throws URISyntaxException {