--- a/base/cpu.cc
+++ b/base/cpu.cc
@@ -135,7 +135,7 @@ class LazyCpuInfoValue {
         brand_.assign(line.substr(strlen(kModelNamePrefix)));
       }
 
-      for (size_t i = 0; i < arraysize(kUnsignedValues); i++) {
+      for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kUnsignedValues); i++) {
         const char *key = kUnsignedValues[i].key;
         const size_t len = strlen(key);
 
