diff --git a/build.gradle b/build.gradle
index 4d78cc1..2aedae8 100644
--- a/build.gradle
+++ b/build.gradle
@@ -20,7 +20,6 @@ dependencies {
    compile (project(':ch.psi.daq.query'))
 
    compile libraries.logback_classic
-   compile 'org.hibernate:hibernate-validator:5.2.0.Final'
    compile(libraries.spring_boot_starter_web)  {
       exclude group: 'org.slf4j', module: 'log4j-over-slf4j'
    }
diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties
new file mode 100644
index 0000000..7095742
--- /dev/null
+++ b/src/main/resources/application.properties
@@ -0,0 +1 @@
+spring.main.allow-bean-definition-overriding=true
\ No newline at end of file