diff --git a/spock-specs/src/test/groovy/org/spockframework/mock/AccessProtectedJavaBaseClass.java b/spock-specs/src/test/java/org/spockframework/mock/AccessProtectedJavaBaseClass.java
similarity index 100%
rename from spock-specs/src/test/groovy/org/spockframework/mock/AccessProtectedJavaBaseClass.java
rename to spock-specs/src/test/java/org/spockframework/mock/AccessProtectedJavaBaseClass.java
diff --git a/spock-specs/src/test/groovy/org/spockframework/mock/Issue520Repository.java b/spock-specs/src/test/java/org/spockframework/mock/Issue520Repository.java
similarity index 100%
rename from spock-specs/src/test/groovy/org/spockframework/mock/Issue520Repository.java
rename to spock-specs/src/test/java/org/spockframework/mock/Issue520Repository.java