diff --git a/error-prone-contrib/src/main/java/tech/picnic/errorprone/refasterrules/OptionalRules.java b/error-prone-contrib/src/main/java/tech/picnic/errorprone/refasterrules/OptionalRules.java
index 2b5c7ea716c..9d078d7b754 100644
--- a/error-prone-contrib/src/main/java/tech/picnic/errorprone/refasterrules/OptionalRules.java
+++ b/error-prone-contrib/src/main/java/tech/picnic/errorprone/refasterrules/OptionalRules.java
@@ -226,7 +226,7 @@ T after(Optional<T> o1, Optional<T> o2) {
    * Prefer {@link Optional#orElseGet(Supplier)} over {@link Optional#orElse(Object)} if the given
    * value is not a compile-time constant.
    */
-  abstract static class OrElseToOrElseGet<T> {
+  static final class OrElseToOrElseGet<T> {
     @BeforeTemplate
     T before(Optional<T> o, @NotMatches(CompileTimeConstantExpressionMatcher.class) T value) {
       return o.orElse(value);