Maven deploy plugin doesn't see my repository inside distributionManagement in pom.xml

Question

I tried to deploy into my remote repository (Nexus) with the command mvn deploy on command line. By doing this I got the following error:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy (default-deploy) on project pro-tools-maven-plugin: Deployment failed: repository element was not specified in the POM inside distributionManagement element or in -DaltDeploymentRepository=id::layout::url parameter -> [Help 1]

I specified my repositories inside distributionManagement in the pom.xml. Username and password are stored in settings.xml.

Snippet of pom.xml:

<distributionManagement>
    <repository>
        <id>thirdparty</id>
        <name>3rd Party (Releases)</name>
        <url>http://bla.net:11000/nexus/content/repositories/thirdparty</url>
    </repository>
    <snapshotRepository>
        <id>thirdparty_snapshots</id>
        <name>3rd Party (Snapshots)</name>
        <url>http://bla.net:11000/nexus/content/repositories/thirdparty_snapshots</url>
    </snapshotRepository>
</distributionManagement>

What could be the problem?