diff --git a/launch/org.eclipse.cdt.docker.launcher/src/org/eclipse/cdt/internal/docker/launcher/ContainerTab.java b/launch/org.eclipse.cdt.docker.launcher/src/org/eclipse/cdt/internal/docker/launcher/ContainerTab.java
index a85488fc332..7028d681d30 100644
--- a/launch/org.eclipse.cdt.docker.launcher/src/org/eclipse/cdt/internal/docker/launcher/ContainerTab.java
+++ b/launch/org.eclipse.cdt.docker.launcher/src/org/eclipse/cdt/internal/docker/launcher/ContainerTab.java
@@ -445,6 +445,7 @@ public class ContainerTab extends AbstractLaunchConfigurationTab implements
 
 	@Override
 	public void performApply(ILaunchConfigurationWorkingCopy configuration) {
+		setWarningMessage(null);
 		String[] dirs = directoriesList.getItems();
 		configuration.setAttribute(ILaunchConstants.ATTR_ADDITIONAL_DIRS,
 				Arrays.asList(dirs));