diff --git a/src/radix_sort_parallel.cu b/src/radix_sort_parallel.cu
index fc72fdcdb6aace9d5a12368b78c99f1622b5a505..9509a5e55081b001e193d507a1b90aecfe694006 100644
--- a/src/radix_sort_parallel.cu
+++ b/src/radix_sort_parallel.cu
@@ -99,7 +99,7 @@ void count_sort(int* d_arr, int n, int idx) {
 
 void radix_sort(int* d_arr, int n) { 
     for (int idx = 1; idx < 32; idx++) {
-        count_sort<<<grid_dim, block_dim>>>(d_arr, n, idx);
+        count_sort(d_arr, n, idx);
     }
 }