diff --git a/kestrel/src/kestrel.h b/kestrel/src/kestrel.h
index 793a597408af69f2795a03f362b2857cc982716c..78d4f00cb7e8a3330bcf9f19ee6e0a1e0a03b5d6 100644
--- a/kestrel/src/kestrel.h
+++ b/kestrel/src/kestrel.h
@@ -9,7 +9,7 @@
 
 #if (WITH_ZEPHYR)
 #define KESTREL_SERVICE_THREAD_PRIORITY		K_PRIO_PREEMPT(0)
-#define THERMAL_SERVICE_THREAD_PRIORITY		K_PRIO_COOP(-1)
+#define THERMAL_SERVICE_THREAD_PRIORITY		K_PRIO_PREEMPT(0)
 #endif
 
 #if (WITH_ZEPHYR)