diff --git a/.github/workflows/java_ci.yml b/.github/workflows/java_ci.yml
index 31f481f2..963ca856 100644
--- a/.github/workflows/java_ci.yml
+++ b/.github/workflows/java_ci.yml
@@ -20,5 +20,7 @@ jobs:
         with:
           java-version: "11"
           distribution: "adopt"
+      - name: Check Spotless format
+        run: mvn spotless:check --file pom.xml
       - name: Build with Maven
         run: mvn -B package --file pom.xml
diff --git a/src/test/java/org/eclipse/biscuit/crypto/SignatureTest.java b/src/test/java/org/eclipse/biscuit/crypto/SignatureTest.java
index ecadba2b..dd094f2c 100644
--- a/src/test/java/org/eclipse/biscuit/crypto/SignatureTest.java
+++ b/src/test/java/org/eclipse/biscuit/crypto/SignatureTest.java
@@ -15,7 +15,6 @@
 import java.security.NoSuchAlgorithmException;
 import java.security.SecureRandom;
 import java.security.SignatureException;
-import org.bouncycastle.jce.provider.BouncyCastleProvider;
 import org.eclipse.biscuit.error.Error;
 import org.eclipse.biscuit.token.Biscuit;
 import org.junit.jupiter.api.Test;