diff --git a/libctru/include/3ds/services/httpc.h b/libctru/include/3ds/services/httpc.h
index 06bc877..6e1c0ed 100644
--- a/libctru/include/3ds/services/httpc.h
+++ b/libctru/include/3ds/services/httpc.h
@@ -17,6 +17,7 @@ void httpcExit();
 
 Result httpcOpenContext(httpcContext *context, char* url, u32 use_defaultproxy);//use_defaultproxy should be zero normally, unless you don't want HTTPC_SetProxyDefault() to be used automatically.
 Result httpcCloseContext(httpcContext *context);
+Result httpcAddRequestHeaderField(httpcContext *context, char* name, char* value);
 Result httpcBeginRequest(httpcContext *context);
 Result httpcReceiveData(httpcContext *context, u8* buffer, u32 size);
 Result httpcGetRequestState(httpcContext *context, httpcReqStatus* out);