diff --git a/mayan/apps/documents/handlers.py b/mayan/apps/documents/handlers.py
index 25623411db..c188dc2288 100644
--- a/mayan/apps/documents/handlers.py
+++ b/mayan/apps/documents/handlers.py
@@ -6,4 +6,5 @@ from .models import DocumentType
 
 
 def create_default_document_type(sender, **kwargs):
-    DocumentType.objects.create(label=_('Default'))
+    if not DocumentType.objects.count():    
+        DocumentType.objects.create(label=_('Default'))
diff --git a/mayan/apps/sources/handlers.py b/mayan/apps/sources/handlers.py
index 7fc23b8684..f3c4c163a6 100644
--- a/mayan/apps/sources/handlers.py
+++ b/mayan/apps/sources/handlers.py
@@ -9,9 +9,10 @@ from .models import POP3Email, IMAPEmail, WatchFolderSource, WebFormSource
 
 
 def create_default_document_source(sender, **kwargs):
-    WebFormSource.objects.create(
-        label=_('Default'), uncompress=SOURCE_UNCOMPRESS_CHOICE_ASK
-    )
+    if not WebFormSource.objects.count():
+        WebFormSource.objects.create(
+            label=_('Default'), uncompress=SOURCE_UNCOMPRESS_CHOICE_ASK
+        )
 
 
 def copy_transformations_to_version(sender, **kwargs):