diff --git a/dll/win32/netcfgx/netcfg_iface.c b/dll/win32/netcfgx/netcfg_iface.c
index 81d2c22ad1f..2dfbcf4dad0 100644
--- a/dll/win32/netcfgx/netcfg_iface.c
+++ b/dll/win32/netcfgx/netcfg_iface.c
@@ -372,7 +372,7 @@ EnumerateNetworkAdapter(NetCfgComponentItem ** pHead)
     SP_DEVINFO_DATA DevInfo;
     HKEY hKey;
     WCHAR szNetCfg[50];
-    WCHAR szAdapterNetCfg[50];
+    WCHAR szAdapterNetCfg[MAX_DEVICE_ID_LEN];
     WCHAR szDetail[200] = L"SYSTEM\\CurrentControlSet\\Control\\Class\\";
     WCHAR szName[130] = L"SYSTEM\\CurrentControlSet\\Control\\Network\\{4D36E972-E325-11CE-BFC1-08002BE10318}\\";
     NetCfgComponentItem * pLast = NULL, *pCurrent;
diff --git a/dll/win32/netcfgx/precomp.h b/dll/win32/netcfgx/precomp.h
index ed736aea491..ceaa12e571a 100644
--- a/dll/win32/netcfgx/precomp.h
+++ b/dll/win32/netcfgx/precomp.h
@@ -21,6 +21,7 @@
 #include <netcfgn.h>
 #include <devguid.h>
 #include <commctrl.h>
+#include <cfgmgr32.h>
 
 #include <wine/debug.h>