diff --git a/tests/run.py b/tests/run.py
index 1dc39ef..ee9303e 100755
--- a/tests/run.py
+++ b/tests/run.py
@@ -16,23 +16,34 @@ import coverage
 
 from django.conf import settings
 from django.test.utils import get_runner
+import colab.settings
 
 
-def runtests():
+def runtests(test_suites=[]):
     if django.VERSION >= (1, 7, 0):
         django.setup()
 
     test_runner = get_runner(settings)
-    failures = test_runner(interactive=False, failfast=False).run_tests([])
+    failures = test_runner(interactive=False, failfast=False).run_tests(
+        test_suites)
     sys.exit(failures)
 
 
-def run_with_coverage():
+def run_with_coverage(test_suites=[]):
     if os.path.exists('.coverage'):
         os.remove('.coverage')
     coverage.process_startup()
-    runtests()
+    runtests(test_suites)
 
 
 if __name__ == '__main__':
-    run_with_coverage()
+    all_valid_apps = True
+
+    for arg in sys.argv[1:]:
+        if arg not in colab.settings.INSTALLED_APPS:
+            print arg + " App not found"
+            print "Try colab." + arg
+            all_valid_apps = False
+
+    if all_valid_apps:
+        run_with_coverage(sys.argv[1:])
--
libgit2 0.21.2