diff --git a/lib/OpenQA/Schema/Result/ScheduledProducts.pm b/lib/OpenQA/Schema/Result/ScheduledProducts.pm
index b71cc98f160..e4ca1934e08 100644
--- a/lib/OpenQA/Schema/Result/ScheduledProducts.pm
+++ b/lib/OpenQA/Schema/Result/ScheduledProducts.pm
@@ -270,7 +270,7 @@ sub _schedule_iso {
     $force = delete $args->{_FORCE_OBSOLETE} || $force;
     if (($deprioritize || $obsolete) && $args->{TEST} && !$force) {
         return {error => 'One must not specify TEST and _DEPRIORITIZEBUILD=1/_OBSOLETE=1 at the same time as it is'
-              . 'likely not intended to deprioritize the whole build when scheduling a single scenario.'
+              . ' likely not intended to deprioritize the whole build when scheduling a single scenario.'
         };
     }