diff --git a/camel-k-loader-groovy/src/main/groovy/org/apache/camel/k/loader/groovy/dsl/Support.groovy b/camel-k-loader-groovy/src/main/groovy/org/apache/camel/k/loader/groovy/dsl/Support.groovy
index 80f0f09e7..d996b2920 100644
--- a/camel-k-loader-groovy/src/main/groovy/org/apache/camel/k/loader/groovy/dsl/Support.groovy
+++ b/camel-k-loader-groovy/src/main/groovy/org/apache/camel/k/loader/groovy/dsl/Support.groovy
@@ -21,16 +21,18 @@ import org.apache.camel.Predicate
 import org.apache.camel.Processor
 
 trait Support {
-    def processor(@DelegatesTo(Exchange) Closure<?> callable) {
+    Processor processor(@DelegatesTo(Exchange) Closure<?> callable) {
+        callable.resolveStrategy = Closure.DELEGATE_FIRST
+
         return {
-            callable.resolveStrategy = DELEGATE_FIRST
             callable.call(it)
         } as Processor
     }
 
-    def predicate(@DelegatesTo(Exchange) Closure<?> callable) {
+    Predicate predicate(@DelegatesTo(Exchange) Closure<?> callable) {
+        callable.resolveStrategy = Closure.DELEGATE_FIRST
+
         return {
-            callable.resolveStrategy = DELEGATE_FIRST
             return callable.call(it)
         } as Predicate
     }
diff --git a/camel-k-loader-groovy/src/test/groovy/org/apache/camel/k/loader/groovy/GroovySourceLoaderIssuesTest.groovy b/camel-k-loader-groovy/src/test/groovy/org/apache/camel/k/loader/groovy/GroovySourceLoaderIssuesTest.groovy
new file mode 100644
index 000000000..3ca06225c
--- /dev/null
+++ b/camel-k-loader-groovy/src/test/groovy/org/apache/camel/k/loader/groovy/GroovySourceLoaderIssuesTest.groovy
@@ -0,0 +1,40 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.camel.k.loader.groovy
+
+
+import org.apache.camel.k.loader.groovy.support.TestRuntime
+import spock.lang.AutoCleanup
+import spock.lang.Specification
+
+class GroovySourceLoaderIssuesTest extends Specification{
+    @AutoCleanup
+    def runtime = new TestRuntime()
+
+    // https://github.com/apache/camel-k-runtime/issues/529
+    def "github-529"() {
+        when:
+            runtime.loadRoutes("classpath:issues/github-529.groovy")
+            runtime.start()
+
+            def result = runtime.camelContext.createFluentProducerTemplate()
+                .to('direct:process')
+                .request(Map.class)
+        then:
+            result['orderId'] == 'myOderId'
+    }
+}
diff --git a/camel-k-loader-groovy/src/test/resources/issues/github-529.groovy b/camel-k-loader-groovy/src/test/resources/issues/github-529.groovy
new file mode 100644
index 000000000..246698bc0
--- /dev/null
+++ b/camel-k-loader-groovy/src/test/resources/issues/github-529.groovy
@@ -0,0 +1,29 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+beans {
+    processInvoice = processor {
+        it.out.body = [
+            orderId: 'myOderId',
+            datetime: System.currentTimeMillis(),
+            currency: 'USD',
+            invoiceId: 'B-0' + (Math.floor(1000 + Math.random() * 9999))
+        ]
+    }
+}
+
+from('direct:process')
+    .process('processInvoice')
\ No newline at end of file