diff --git a/com.oracle.truffle.r.test/src/com/oracle/truffle/r/test/tck/FastRDebugTest.java b/com.oracle.truffle.r.test/src/com/oracle/truffle/r/test/tck/FastRDebugTest.java
index bb90ffbf43b6af20acf459752a595e0736a4b372..0be73254c66b00e28cc45419f5978ef190f8f71e 100644
--- a/com.oracle.truffle.r.test/src/com/oracle/truffle/r/test/tck/FastRDebugTest.java
+++ b/com.oracle.truffle.r.test/src/com/oracle/truffle/r/test/tck/FastRDebugTest.java
@@ -164,9 +164,6 @@ public class FastRDebugTest {
         assertEquals("Factorial computed OK", 2, i);
     }
 
-    /**
-     * Test is currently ignored because of missing functionality in Truffle.
-     */
     @Test
     public void testConditionalBreakpoint() throws Throwable {
         final Source source = sourceFromText("main <- function() { res <- 0;\n" +
diff --git a/mx.fastr/mx_fastr.py b/mx.fastr/mx_fastr.py
index c8cac58a4d60a62365b206c387e1f056187a33cb..beb02cb20ea00d8ec8d0213f9d9ba101dc483d1f 100644
--- a/mx.fastr/mx_fastr.py
+++ b/mx.fastr/mx_fastr.py
@@ -337,7 +337,9 @@ def _simple_generated_unit_tests():
     return map(_test_subpackage, ['engine.shell', 'engine.interop', 'library.base', 'library.grid', 'library.fastrGrid', 'library.methods', 'library.stats', 'library.tools', 'library.utils', 'library.fastr', 'builtins', 'functions', 'parser', 'rffi', 'rng', 'runtime.data', 'S4'])
 
 def _simple_unit_tests():
-    return _simple_generated_unit_tests() + ['com.oracle.truffle.r.nodes.castsTests', 'com.oracle.truffle.tck.tests']
+    # com.oracle.truffle.tck.tests - truffle language inter-operability tck in com.oracle.truffle.r.test.tck/
+    # com.oracle.truffle.r.test.tck - other tck tests in com.oracle.truffle.r.test/ e.g. FastRDebugTest
+    return _simple_generated_unit_tests() + ['com.oracle.truffle.r.nodes.castsTests', 'com.oracle.truffle.tck.tests', 'com.oracle.truffle.r.test.tck']
 
 def _nodes_unit_tests():
     return ['com.oracle.truffle.r.nodes.test', 'com.oracle.truffle.r.nodes.access.vector']