diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 68859c8..c739bbd 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -51,7 +51,7 @@ jobs:
       run: cargo clippy --all-targets --all-features
 
     - name: Check Formatting
-      run: cargo fmt --all -- --check
+      run: cargo fmt --all --check
 
     - name: Test
       run: |
diff --git a/tests/justfile b/tests/justfile
index cfcdc44..9b3b7de 100644
--- a/tests/justfile
+++ b/tests/justfile
@@ -41,7 +41,7 @@ build:
 # for test runner development: strict production-level checks on test runner code
 lint:
   cargo clippy --all-targets --all-features -- -Dwarnings
-  cargo fmt --all -- --check
+  cargo fmt --all --check
 
 # for test case development: verify that test case files are valid justfiles
 check-cases: