Index: trunk/src/org/openstreetmap/josm/data/validation/tests/MapCSSTagChecker.java
===================================================================
--- trunk/src/org/openstreetmap/josm/data/validation/tests/MapCSSTagChecker.java	(revision 10920)
+++ trunk/src/org/openstreetmap/josm/data/validation/tests/MapCSSTagChecker.java	(revision 10921)
@@ -799,4 +799,5 @@
                     Main.debug("- Errors: "+pErrors);
                 }
+                @SuppressWarnings({"EqualsBetweenInconvertibleTypes", "EqualsIncompatibleType"})
                 final boolean isError = pErrors.stream().anyMatch(e -> e.getTester().equals(check.rule));
                 if (isError != i.getValue()) {