diff --git a/tests/codex/slots/testprover.nim b/tests/codex/slots/testprover.nim
index 9f42fe0d..4735e871 100644
--- a/tests/codex/slots/testprover.nim
+++ b/tests/codex/slots/testprover.nim
@@ -32,7 +32,7 @@ suite "Test Prover":
     samples = 5
     blockSize = DefaultBlockSize
     cellSize = DefaultCellSize
-    ecK = 2
+    ecK = 3
     ecM = 2
     numDatasetBlocks = 8