diff --git a/core/src/index/unittest/faiss_benchmark/faiss_benchmark_test.cpp b/core/src/index/unittest/faiss_benchmark/faiss_benchmark_test.cpp
index 0c7cb97807..ed00e74a98 100644
--- a/core/src/index/unittest/faiss_benchmark/faiss_benchmark_test.cpp
+++ b/core/src/index/unittest/faiss_benchmark/faiss_benchmark_test.cpp
@@ -550,7 +550,7 @@ TEST(FAISSTEST, BENCHMARK) {
     test_ann_hdf5("glove-200-angular", "IVF16384,SQ8",       1, {8, 128});
 #ifdef CUSTOMIZATION
     test_ann_hdf5("glove-200-angular", "IVF16384,SQ8Hybrid", 1, {8, 128});
-    test_ivfsq8h_gpu("glove-200-angular", 2, {8, 128});
+    test_ivfsq8h_gpu("glove-200-angular", 1, {8, 128});
 #endif
 }