diff --git a/CHANGES.md b/CHANGES.md
index 58f19f1..9ad1aa2 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,6 +1,7 @@
 ### 0.21.19 (2019-03-08 15:45:00 UTC)
 
 * Change update provider TL from v4/classic to V5
+* Fix webapi (add show) wrong error message if show is not at info source
 
 
 ### 0.21.18 (2020-03-04 19:20:00 UTC)
diff --git a/sickbeard/webapi.py b/sickbeard/webapi.py
index 778e8ed..ab4f2a8 100644
--- a/sickbeard/webapi.py
+++ b/sickbeard/webapi.py
@@ -3242,9 +3242,9 @@ class CMD_SickGearShowAddExisting(ApiCall):
                 raise e
 
         indexerName = None
-        if not myShow.data['seriesname']:
+        if None is myShow or getattr(t, 'show_not_found', False) or not myShow.data['seriesname']:
             self.log(
-                u"Found show with tvid " + str(self.tvid) + " prodid " + str(self.prodid) + ", however it contained no show name",
+                "Found show with tvid %s prodid %s, however it contained no show name" % (self.tvid, self.prodid),
                 logger.DEBUG)
             return _responds(RESULT_FAILURE, msg="Unable to retrieve information from indexer")
 
@@ -3405,9 +3405,9 @@ class CMD_SickGearShowAddNew(ApiCall):
                 raise e
 
         indexerName = None
-        if not myShow.data['seriesname']:
+        if None is myShow or getattr(t, 'show_not_found', False) or not myShow.data['seriesname']:
             self.log(
-                u"Found show with tvid " + self.tvid + " prodid " + str(self.prodid) + ", however it contained no show name",
+                "Found show with tvid %s prodid %s, however it contained no show name" % (self.tvid, self.prodid),
                 logger.DEBUG)
             return _responds(RESULT_FAILURE, msg="Unable to retrieve information from indexer")