diff --git a/org.lflang.tests/src/org/lflang/tests/TestRegistry.java b/org.lflang.tests/src/org/lflang/tests/TestRegistry.java
index 1bed12bce7..8debf1e0f7 100644
--- a/org.lflang.tests/src/org/lflang/tests/TestRegistry.java
+++ b/org.lflang.tests/src/org/lflang/tests/TestRegistry.java
@@ -76,7 +76,7 @@ public Set<LFTest> getTests(Target t, TestCategory c) {
      * test file that has a directory in its path that matches an entry in this
      * array will not be discovered.
      */
-    public static final String[] IGNORED_DIRECTORIES = {"failing", "knownfailed", "failed"};
+    public static final String[] IGNORED_DIRECTORIES = {"failing", "knownfailed", "failed", "fed-gen"};
     
     /**
      * Path to the root of the repository.