diff --git a/CARET_trace/src/ros_trace_points.cpp b/CARET_trace/src/ros_trace_points.cpp
index fe3a8c6e..25cb41c5 100644
--- a/CARET_trace/src/ros_trace_points.cpp
+++ b/CARET_trace/src/ros_trace_points.cpp
@@ -53,20 +53,21 @@ thread_local bool trace_filter_is_rcl_publish_recorded;
 
 bool exclusion_event = false;
 
-bool filter_launch_node() {
+bool filter_launch_node()
+{
   pid_t pid = getpid();
-  FILE *fp;
+  FILE * fp;
   char cmd_str[1024];
   char result_str[1024];
 
-  sprintf( cmd_str, "ps -ax |grep \"ros2 launch\" | grep %d", pid);
-  fp = popen( cmd_str, "r" );
-  if ( fgets( result_str, sizeof(result_str), fp ) == NULL ) {
+  sprintf(cmd_str, "ps -ax |grep \"ros2 launch\" | grep %d", pid);
+  fp = popen(cmd_str, "r");
+  if (fgets(result_str, sizeof(result_str), fp) == NULL) {
     pclose(fp);
     return false;
   }
   pclose(fp);
-  if ( strstr(result_str, "grep") == NULL ) {
+  if (strstr(result_str, "grep") == NULL) {
     return true;
   }
   return false;