diff --git a/api/sql/dump.sql b/api/sql/dump.sql
index 9dcdf1f..3469156 100644
--- a/api/sql/dump.sql
+++ b/api/sql/dump.sql
@@ -13,7 +13,7 @@ CREATE TABLE IF NOT EXISTS pipelines (
 	params JSONB NOT NULL,
 	user_id INTEGER NOT NULL,
 	enabled BOOLEAN NOT NULL,
-	error TEXT NOT NULL,
+	error TEXT,
 	trigger_count INTEGER NOT NULL,
 	last_trigger TIMESTAMP,
 	CONSTRAINT fk_user
diff --git a/api/src/Db/Pipeline.hs b/api/src/Db/Pipeline.hs
index 44129e6..cac8dcd 100644
--- a/api/src/Db/Pipeline.hs
+++ b/api/src/Db/Pipeline.hs
@@ -39,7 +39,7 @@ data Pipeline f = Pipeline
     , pipelineParams :: Column f PipelineParams
     , pipelineUserId :: Column f UserId
     , pipelineEnabled :: Column f Bool
-    , pipelineError :: Column f Text
+    , pipelineError :: Column f (Maybe Text)
     , pipelineTriggerCount :: Column f Int64
     , pipelineLastTrigger :: Column f (Maybe UTCTime)
     }
@@ -98,7 +98,7 @@ insertPipeline (Pipeline _ name type' params uid _ _ _ _) =
                     , pipelineParams = lit params
                     , pipelineUserId = lit uid
                     , pipelineEnabled = lit True
-                    , pipelineError = lit ""
+                    , pipelineError = lit Nothing
                     , pipelineTriggerCount = lit 0
                     , pipelineLastTrigger = lit Nothing
                     }
diff --git a/api/src/Utils.hs b/api/src/Utils.hs
index 4d13e34..872e018 100644
--- a/api/src/Utils.hs
+++ b/api/src/Utils.hs
@@ -37,7 +37,7 @@ instance Default (Pipeline Identity) where
     , pipelineParams = defaultPipelineParams
     , pipelineUserId = UserId 1
     , pipelineEnabled = True
-    , pipelineError = ""
+    , pipelineError = Nothing
     , pipelineTriggerCount = 0
     , pipelineLastTrigger = Nothing
     }