diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8efc54754c95a69c5517f2fa12a7f07c4e91683b..bceb21c0aef215d477e89e3a3225531b15e38a8e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -63,8 +63,8 @@ tests-3.7-coverage:
   tags: [poetry-78]
   script:
     - poetry install
-    - poetry run -- pytest --cov silkaj --cov-report html:cov_html
-    - poetry run -- coverage-badge -o cov_html/coverage.svg
+    - poetry run pytest --cov silkaj --cov-report html:cov_html
+    - poetry run coverage-badge -o cov_html/coverage.svg
   artifacts:
     paths:
       - cov_html
diff --git a/doc/install_poetry.md b/doc/install_poetry.md
index a85e2576a465b0c4e85edde0960718129b3e16fe..febe9fdb5c5c764699af955dda16ea38048ceada 100644
--- a/doc/install_poetry.md
+++ b/doc/install_poetry.md
@@ -37,5 +37,5 @@ You might need to enter Poetry shell to access development tools such as `pytest
 
 Add following alias to your shell configuration:
 ```bash
-alias silkaj="cd /path/to/silkaj/silkaj && poetry run -- silkaj"
+alias silkaj="cd /path/to/silkaj/silkaj && poetry run silkaj"
 ```
diff --git a/tests/test_end_to_end.py b/tests/test_end_to_end.py
index 558ff29a7e53816bf4adbebd63811535be8bcd56..1ea84e37195cacfe7d855b6ef81983fa39152c24 100644
--- a/tests/test_end_to_end.py
+++ b/tests/test_end_to_end.py
@@ -1,6 +1,6 @@
 from subprocess import check_output
 
-silkaj = ["poetry", "run", "--", "bin/silkaj"]
+silkaj = ["poetry", "run", "bin/silkaj"]
 
 
 def test_info():