diff --git a/platform2/aosp/system/core/libutils/Timers.cpp b/platform2/aosp/system/core/libutils/Timers.cpp
index 4cfac57..5b1c0bc 100644
--- a/platform2/aosp/system/core/libutils/Timers.cpp
+++ b/platform2/aosp/system/core/libutils/Timers.cpp
@@ -23,7 +23,7 @@
 #include <android-base/macros.h>
 #include <utils/Log.h>
 
-static constexpr size_t clock_id_max = 5;
+static constexpr int clock_id_max = 5;
 
 static void checkClockId(int clock) {
     LOG_ALWAYS_FATAL_IF(clock < 0 || clock >= clock_id_max, "invalid clock id");