diff --git a/src/util/system.h b/src/util/system.h
--- a/src/util/system.h
+++ b/src/util/system.h
@@ -391,10 +391,8 @@
  * On platforms that support it, tell the kernel the calling thread is
  * CPU-intensive and non-interactive. See SCHED_BATCH in sched(7) for details.
  *
- * @return The return value of sched_setschedule(), or 1 on systems without
- * sched_setchedule().
  */
-int ScheduleBatchPriority();
+void ScheduleBatchPriority();
 
 namespace util {
 
diff --git a/src/util/system.cpp b/src/util/system.cpp
--- a/src/util/system.cpp
+++ b/src/util/system.cpp
@@ -1370,16 +1370,12 @@
     return fs::absolute(path, GetDataDir(net_specific));
 }
 
-int ScheduleBatchPriority() {
+void ScheduleBatchPriority() {
 #ifdef SCHED_BATCH
     const static sched_param param{};
-    if (int ret = pthread_setschedparam(pthread_self(), SCHED_BATCH, &param)) {
+    if (pthread_setschedparam(pthread_self(), SCHED_BATCH, &param) != 0) {
         LogPrintf("Failed to pthread_setschedparam: %s\n", strerror(errno));
-        return ret;
     }
-    return 0;
-#else
-    return 1;
 #endif
 }