diff --git a/test/test_targets.py b/test/test_targets.py
index 42b7978..81d0368 100644
--- a/test/test_targets.py
+++ b/test/test_targets.py
@@ -16,6 +16,7 @@ from litex.soc.integration.builder import *
 class TestTargets(unittest.TestCase):
     excluded_platforms = [
         "qmtech_daughterboard",              # Reason: Not a real platform.
+        "enclustra_st1",                     # Readon: Not a real platform.
         "quicklogic_quickfeather",           # Reason: No default clock.
         "efinix_titanium_ti60_f225_dev_kit", # Reason: Require Efinity toolchain.
         "efinix_trion_t120_bga576_dev_kit",  # Reason: Require Efinity toolchain.