diff --git a/src/util/system.cpp b/src/util/system.cpp
--- a/src/util/system.cpp
+++ b/src/util/system.cpp
@@ -1358,8 +1358,9 @@
 void ScheduleBatchPriority() {
 #ifdef SCHED_BATCH
     const static sched_param param{};
-    if (pthread_setschedparam(pthread_self(), SCHED_BATCH, &param) != 0) {
-        LogPrintf("Failed to pthread_setschedparam: %s\n", strerror(errno));
+    const int rc = pthread_setschedparam(pthread_self(), SCHED_BATCH, &param);
+    if (rc != 0) {
+        LogPrintf("Failed to pthread_setschedparam: %s\n", strerror(rc));
     }
 #endif
 }