diff --git a/driver/others/parameter.c b/driver/others/parameter.c
index 80f708452..4a8542a93 100644
--- a/driver/others/parameter.c
+++ b/driver/others/parameter.c
@@ -684,13 +684,17 @@ void blas_set_parameter(void){
 #if defined(ARCH_MIPS64) 
 void blas_set_parameter(void){
 #if defined(LOONGSON3A)
+#ifdef SMP
   if(blas_num_threads == 1){
+#endif
     //single thread
     dgemm_r = 1000;
+#ifdef SMP
   }else{
     //multi thread
     dgemm_r = 300;
   }
 #endif
+#endif
 }
 #endif