diff --git a/tensorflow/lite/experimental/ruy/test_fast.cc b/tensorflow/lite/experimental/ruy/test_fast.cc
index 7026bca4616..8e23b573d06 100644
--- a/tensorflow/lite/experimental/ruy/test_fast.cc
+++ b/tensorflow/lite/experimental/ruy/test_fast.cc
@@ -73,7 +73,8 @@ TEST(RuyTest, TestMiscMuls) {
 }
 
 TEST(RuyTest, TestDeepMuls) {
-  TestRCC<TestSetType>(1, 50001, 1);
+  // TODO(b/137649322): clarify what's the max allowed matrix size.
+  TestRCC<TestSetType>(1, 32767, 1);
   TestLinearAllOrders<TestSetType>(5, 5001, 4);
   TestLinearAllOrders<TestSetType>(9, 1025, 10);
 }