diff --git a/src/sphere/np_sphere.cpp b/src/sphere/np_sphere.cpp
index cec49e8e78ad43edc34426830c41ecf7b42c100f..9449ace4a2b93bb8ee75f7b5fb1b4e758f436508 100644
--- a/src/sphere/np_sphere.cpp
+++ b/src/sphere/np_sphere.cpp
@@ -21,7 +21,7 @@ extern void sphere(string config_file, string data_file, string output_path);
  */
 int main(int argc, char **argv) {
 	string config_file = "../../test_data/sphere/DEDFB";
-	string data_file = "../../test_data/sphere/DCLU";
+	string data_file = "../../test_data/sphere/DSPH";
 	string output_path = ".";
 	if (argc == 4) {
 		config_file = string(argv[1]);