Fixed #25984 -- Corrected RuntimeError message in ModelBase.__new__().

2 files changed, 4 insertions, 5 deletions

diff --git a/django/db/models/base.py b/django/db/models/base.py
index 149b0e5a42..028367d584 100644
--- a/django/db/models/base.py
+++ b/django/db/models/base.py
@@ -98,9 +98,9 @@ class ModelBase(type):
                 if not abstract:
                     raise RuntimeError(
                         "Model class %s.%s doesn't declare an explicit "
-                        "app_label and either isn't in an application in "
-                        "INSTALLED_APPS or else was imported before its "
-                        "application was loaded. " % (module, name))
+                        "app_label and isn't in an application in "
+                        "INSTALLED_APPS." % (module, name)
+                    )
 
             else:
                 app_label = app_config.label
diff --git a/tests/runtests.py b/tests/runtests.py
index 7d7df4486a..ced896987b 100755
--- a/tests/runtests.py
+++ b/tests/runtests.py
@@ -73,8 +73,7 @@ ALWAYS_MIDDLEWARE_CLASSES = [
 
 # Need to add the associated contrib app to INSTALLED_APPS in some cases to
 # avoid "RuntimeError: Model class X doesn't declare an explicit app_label
-# and either isn't in an application in INSTALLED_APPS or else was imported
-# before its application was loaded."
+# and isn't in an application in INSTALLED_APPS."
 CONTRIB_TESTS_TO_APPS = {
     'flatpages_tests': 'django.contrib.flatpages',
     'redirects_tests': 'django.contrib.redirects',