diff --git a/Rakefile b/Rakefile
index 8e0b66f..b02eca9 100644
--- a/Rakefile
+++ b/Rakefile
@@ -36,7 +36,7 @@ task :tdd, [:name]  do |_, args|
     compose('exec', 'test.dev', "bash -c 'cd #{test_dir}/tests && python3 -m unittest'")
   else
     compose('exec', 'test.dev', "bash -c 'cd modules && flake8 *'")
-    compose('exec', 'test.dev', "bash -c 'python -m unittest discover -s modules'")
+    compose('exec', 'test.dev', "bash -c 'python3 -m unittest discover -s modules'")
   end
 end
 
diff --git a/docker-compose.test.yaml b/docker-compose.test.yaml
index 1c78bae..e898d7a 100755
--- a/docker-compose.test.yaml
+++ b/docker-compose.test.yaml
@@ -2,7 +2,7 @@ services:
   test.dev:
     build:
       context: .
-      dockerfile: Dockerfile_Test
+      dockerfile: Dockerfile_test
       args:
         TRYTOND_VERSION: ${TRYTOND_VERSION}
     environment: