diff --git a/buildbot_nix/__init__.py b/buildbot_nix/__init__.py
index 08f9c0c..65ba547 100644
--- a/buildbot_nix/__init__.py
+++ b/buildbot_nix/__init__.py
@@ -506,10 +506,10 @@ class NixConfigure(buildstep.CommandMixin, steps.BuildStep):
             configure_log: Log = yield self.addLog("stdio")
 
         # Takes precedence.
-        configure_log.addStdout("checking if there's a .ci/buildbot.nix...")
+        configure_log.addStdout("checking if there's a .ci/buildbot.nix...\n")
         ci_buildbot_defn_exists = yield self.pathExists('build/.ci/buildbot.nix')
         if ci_buildbot_defn_exists:
-            configure_log.addStdout(".ci/buildbot.nix found, configured for non-flake CI")
+            configure_log.addStdout(".ci/buildbot.nix found, configured for non-flake CI\n")
             self.build.addStepsAfterCurrentStep(
                 [
                     make_job_evaluator(
@@ -519,6 +519,7 @@ class NixConfigure(buildstep.CommandMixin, steps.BuildStep):
                     )
                 ]
             )
+            return SUCCESS
 
         flake_exists = yield self.pathExists('build/flake.nix')
         if flake_exists:
@@ -531,9 +532,10 @@ class NixConfigure(buildstep.CommandMixin, steps.BuildStep):
                     )
                 ]
             )
-            return
+            return SUCCESS
 
         configure_log.addStdout("neither flake.nix found neither .ci/buildbot.nix, no CI to run!")
+        return SUCCESS
 
 class NixBuildCommand(buildstep.ShellMixin, steps.BuildStep):
     """Builds a nix derivation."""