diff --git a/intl/locale/src/nsLocale.cpp b/intl/locale/src/nsLocale.cpp
index 15a5be430748..b3473028d22e 100644
--- a/intl/locale/src/nsLocale.cpp
+++ b/intl/locale/src/nsLocale.cpp
@@ -104,7 +104,7 @@ nsLocale::Hash_HashFunction(const void* key)
 	length = stringKey->Length();
 
 	for(length-=1;length>=0;length--)
-		hash += (PLHashNumber)((*stringKey)[length]);
+		hash += (PLHashNumber)stringKey->CharAt(length);
 
 	return hash;
 }