--- old/core/org.openjdk.jmc.flightrecorder.rules.jdk/src/main/java/org/openjdk/jmc/flightrecorder/rules/jdk/io/FileReadRule.java	2018-07-02 15:01:57.000000000 +0200
+++ new/core/org.openjdk.jmc.flightrecorder.rules.jdk/src/main/java/org/openjdk/jmc/flightrecorder/rules/jdk/io/FileReadRule.java	2018-07-02 15:01:57.000000000 +0200
@@ -77,7 +77,7 @@
 
 	private Result getResult(IItemCollection items, IPreferenceValueProvider vp) {
 		EventAvailability eventAvailability = RulesToolkit.getEventAvailability(items, JdkTypeIDs.FILE_READ);
-		if (eventAvailability == EventAvailability.UNAVAILABLE || eventAvailability == EventAvailability.DISABLED) {
+		if (eventAvailability == EventAvailability.UNKNOWN || eventAvailability == EventAvailability.DISABLED) {
 			return RulesToolkit.getEventAvailabilityResult(this, items, eventAvailability, JdkTypeIDs.FILE_READ);
 		}