diff --git a/src/test/groovy/com/hierynomus/security/jce/derivationfunction/KDFCounterHMacSHA256.groovy b/src/test/groovy/com/hierynomus/security/jce/derivationfunction/KDFCounterHMacSHA256Spec.groovy
similarity index 100%
rename from src/test/groovy/com/hierynomus/security/jce/derivationfunction/KDFCounterHMacSHA256.groovy
rename to src/test/groovy/com/hierynomus/security/jce/derivationfunction/KDFCounterHMacSHA256Spec.groovy