--- a/netwerk/dns/GetAddrInfo.cpp
+++ b/netwerk/dns/GetAddrInfo.cpp
@@ -29,24 +29,24 @@ static PRLogModuleInfo *gGetAddrInfoLog 
 #define LOG_WARNING(msg, ...) \
   PR_LOG(gGetAddrInfoLog, PR_LOG_WARNING, ("[DNS]: " msg, ##__VA_ARGS__))
 #else
 #define LOG(args)
 #define LOG_WARNING(args)
 #endif
 
 #if DNSQUERY_AVAILABLE
-// There is a bug in Windns.h where the type of parameter ppQueryResultsSet for
+// There is a bug in windns.h where the type of parameter ppQueryResultsSet for
 // DnsQuery_A is dependent on UNICODE being set. It should *always* be
 // PDNS_RECORDA, but if UNICODE is set it is PDNS_RECORDW. To get around this
 // we make sure that UNICODE is unset.
 #undef UNICODE
 #include <ws2tcpip.h>
 #undef GetAddrInfo
-#include <Windns.h>
+#include <windns.h>
 #endif
 
 namespace mozilla {
 namespace net {
 
 #if DNSQUERY_AVAILABLE
 ////////////////////////////
 // WINDOWS IMPLEMENTATION //