--- a/security/manager/ssl/tests/unit/tlsserver/cmd/GenerateOCSPResponse.cpp
+++ b/security/manager/ssl/tests/unit/tlsserver/cmd/GenerateOCSPResponse.cpp
@@ -72,19 +72,19 @@ const static OCSPResponseName kOCSPRespo
 
 bool
 StringToOCSPResponseType(const char* respText,
                          /*out*/ OCSPResponseType* OCSPType)
 {
   if (!OCSPType) {
     return false;
   }
-  for (uint32_t i = 0; i < mozilla::ArrayLength(kOCSPResponseNameList); i++) {
-    if (strcmp(respText, kOCSPResponseNameList[i].mTypeString) == 0) {
-      *OCSPType = kOCSPResponseNameList[i].mORT;
+  for (auto ocspResponseName : kOCSPResponseNameList) {
+    if (strcmp(respText, ocspResponseName.mTypeString) == 0) {
+      *OCSPType = ocspResponseName.mORT;
       return true;
     }
   }
   return false;
 }
 
 bool
 WriteResponse(const char* filename, const SECItem* item)