diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 135b1b8..1907fa8 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -45,6 +45,10 @@ jobs:
         with:
           command: clippy
           args: -- -D warnings
+      - uses: actions-rs/cargo@v1
+        with:
+          command: clippy
+          args: --tests -- -D warnings
   fmt:
     name: Rustfmt
     runs-on: ubuntu-latest
diff --git a/src/rust_api.rs b/src/rust_api.rs
index 3fe279b..ca8837c 100644
--- a/src/rust_api.rs
+++ b/src/rust_api.rs
@@ -788,7 +788,7 @@ mod tests {
     fn test_as_ref() {
         let sequence = dna("ac");
         let nucleotides: &[NucleotideAmbiguous] = sequence.as_ref();
-        assert!(nucleotides == &[NucleotideAmbiguous::A, NucleotideAmbiguous::C]);
+        assert!(nucleotides == [NucleotideAmbiguous::A, NucleotideAmbiguous::C]);
     }
 
     #[cfg(feature = "serde")]