diff --git a/plugins/ps/triggers.go b/plugins/ps/triggers.go
index ee3f133c8..c6ef96a8e 100644
--- a/plugins/ps/triggers.go
+++ b/plugins/ps/triggers.go
@@ -77,15 +77,27 @@ func TriggerCorePostExtract(appName string, sourceWorkDir string) error {
 	b, _ := common.PlugnTriggerOutput("git-get-property", []string{appName, "source-image"}...)
 	appSourceImage := strings.TrimSpace(string(b[:]))
 
+	repoDefaultProcfilePath := path.Join(sourceWorkDir, "Procfile")
 	if appSourceImage == "" {
 		repoProcfilePath := path.Join(sourceWorkDir, procfilePath)
 		if !common.FileExists(repoProcfilePath) {
+			if procfilePath != "Procfile" && common.FileExists(repoDefaultProcfilePath) {
+				if err := os.Remove(repoDefaultProcfilePath); err != nil {
+					return err
+				}
+			}
 			return common.TouchFile(fmt.Sprintf("%s.missing", processSpecificProcfile))
 		}
 
 		if err := copy.Copy(repoProcfilePath, processSpecificProcfile); err != nil {
 			return fmt.Errorf("Unable to extract Procfile: %v", err.Error())
 		}
+
+		if procfilePath != "Procfile" {
+			if err := copy.Copy(repoProcfilePath, repoDefaultProcfilePath); err != nil {
+				return fmt.Errorf("Unable to move Procfile into place: %v", err.Error())
+			}
+		}
 	} else {
 		if err := common.CopyFromImage(appName, appSourceImage, procfilePath, processSpecificProcfile); err != nil {
 			return common.TouchFile(fmt.Sprintf("%s.missing", processSpecificProcfile))
diff --git a/tests/apps/python/Procfile b/tests/apps/python/Procfile
index 88d4d849f..77b9a38ff 100644
--- a/tests/apps/python/Procfile
+++ b/tests/apps/python/Procfile
@@ -3,11 +3,11 @@
 ###############################
 
 # Procfile for development using the new threaded worker (scheduler, twitter stream and delayed job)
-cron: python3 worker.py
-web: python3 web.py # testing inline comment
-worker: python3 worker.py
+cron: python3 -u worker.py
+web: python3 -u web.py first.Procfile # testing inline comment
+worker: python3 -u worker.py
 custom: echo -n
-release: python3 release.py
+release: python3 -u release.py
 
 
 # Old version with separate processes (use this if you have issues with the threaded version)
diff --git a/tests/apps/python/second.Procfile b/tests/apps/python/second.Procfile
index b03a168c7..9c0e25d2e 100644
--- a/tests/apps/python/second.Procfile
+++ b/tests/apps/python/second.Procfile
@@ -1 +1 @@
-web: python3 web.py
+web: python3 -u web.py second.Procfile
diff --git a/tests/apps/python/sub-app/Procfile b/tests/apps/python/sub-app/Procfile
index bb1e3346a..9512e68d7 100644
--- a/tests/apps/python/sub-app/Procfile
+++ b/tests/apps/python/sub-app/Procfile
@@ -1,2 +1,2 @@
 web: python3 web.py
-release: python3 release.py
+release: python3 -u release.py
diff --git a/tests/apps/python/web.py b/tests/apps/python/web.py
index e14bb903c..5d7a77953 100644
--- a/tests/apps/python/web.py
+++ b/tests/apps/python/web.py
@@ -22,6 +22,9 @@ if __name__ == "__main__":
         print("Failing on startup due to FAIL_ON_STARTUP=true")
         sys.exit(1)
 
+    for arg in sys.argv:
+        print(f"Arg: {arg}")
+
     port = int(os.getenv("PORT", 5000))
     server = http.server.HTTPServer(("0.0.0.0", port), GetHandler)
     print("Listening on port {0}".format(port))
diff --git a/tests/unit/app-json.bats b/tests/unit/app-json.bats
index 7155f59e9..3ea5fb674 100644
--- a/tests/unit/app-json.bats
+++ b/tests/unit/app-json.bats
@@ -52,7 +52,7 @@ teardown() {
   echo "status: $status"
   assert_success
   assert_output_contains "touch /app/heroku-postdeploy.test"
-  assert_output_contains "python3 release.py"
+  assert_output_contains "python3 -u release.py"
 }
 
 @test "(app-json) app.json scripts missing" {
diff --git a/tests/unit/ps-general-2.bats b/tests/unit/ps-general-2.bats
index 0fc167f5b..70a869e43 100644
--- a/tests/unit/ps-general-2.bats
+++ b/tests/unit/ps-general-2.bats
@@ -90,11 +90,18 @@ teardown() {
 }
 
 @test "(ps:set) procfile-path" {
-  run deploy_app dockerfile-procfile
+  run deploy_app python
   echo "output: $output"
   echo "status: $status"
   assert_success
 
+  run /bin/bash -c "dokku logs $TEST_APP"
+  echo "output: $output"
+  echo "status: $status"
+  assert_output_contains "Arg: web.py"
+  assert_output_contains "Arg: first.Procfile"
+  assert_success
+
   run /bin/bash -c "dokku ps:set $TEST_APP procfile-path nonexistent-procfile"
   echo "output: $output"
   echo "status: $status"
@@ -117,6 +124,13 @@ teardown() {
   assert_success
   assert_output_contains 'SECRET_KEY:' 0
 
+  run /bin/bash -c "dokku logs $TEST_APP"
+  echo "output: $output"
+  echo "status: $status"
+  assert_output_contains "Arg: web.py"
+  assert_output_contains "Arg: second.Procfile"
+  assert_success
+
   run /bin/bash -c "dokku ps:set $TEST_APP procfile-path"
   echo "output: $output"
   echo "status: $status"
@@ -127,6 +141,13 @@ teardown() {
   echo "status: $status"
   assert_success
   assert_output_contains 'SECRET_KEY:'
+
+  run /bin/bash -c "dokku logs $TEST_APP"
+  echo "output: $output"
+  echo "status: $status"
+  assert_output_contains "Arg: web.py"
+  assert_output_contains "Arg: first.Procfile"
+  assert_success
 }
 
 @test "(ps:scale) remove zerod processes" {