diff --git a/services/surfaceflinger/Scheduler/RefreshRateConfigs.cpp b/services/surfaceflinger/Scheduler/RefreshRateConfigs.cpp
index 5b78483..f19177b 100644
--- a/services/surfaceflinger/Scheduler/RefreshRateConfigs.cpp
+++ b/services/surfaceflinger/Scheduler/RefreshRateConfigs.cpp
@@ -528,6 +528,7 @@
         HwcConfigIndexType currentConfigId)
       : mKnownFrameRates(constructKnownFrameRates(configs)) {
     LOG_ALWAYS_FATAL_IF(configs.empty());
+    LOG_ALWAYS_FATAL_IF(currentConfigId.value() < 0);
     LOG_ALWAYS_FATAL_IF(currentConfigId.value() >= configs.size());
 
     for (auto configId = HwcConfigIndexType(0); configId.value() < configs.size(); configId++) {