diff --git a/src/blas/HPLAI_blas.cc b/src/blas/HPLAI_blas.cc
index 229a61a..9c8d1c2 100644
--- a/src/blas/HPLAI_blas.cc
+++ b/src/blas/HPLAI_blas.cc
@@ -304,6 +304,13 @@ void blas::copy<float, float>(
 
 #if defined(HPLAI_CUBLASGEMMEX_COMPUTETYPE)
 
+static cublasOperation_t HPLAI_op2cublas(blas::Op trans)
+{
+    return trans == blas::Op::NoTrans ? CUBLAS_OP_N
+           : trans == blas::Op::Trans ? CUBLAS_OP_T
+                                      : CUBLAS_OP_C;
+}
+
 static cudaDataType_t HPLAI_GET_cudaDataType_t(float t)
 {
     return CUDA_R_32F;
@@ -447,8 +454,8 @@ void blas::gemm<HPLAI_T_AFLOAT, HPLAI_T_AFLOAT, HPLAI_T_AFLOAT>(
     HPLAI_T_AFLOAT rone = HPLAI_rone;
     cublasGemmEx(
         HPLAI_DEVICE_BLASPP_QUEUE->handle(),
-        blas::device::op2cublas(TRANSA),
-        blas::device::op2cublas(TRANSB),
+        HPLAI_op2cublas(TRANSA),
+        HPLAI_op2cublas(TRANSB),
         M1,
         N1,
         K1,