diff --git a/dlls/mpr/wnetpriv.h b/dlls/mpr/wnetpriv.h
index 7a329029f3d..3e744c55ca7 100644
--- a/dlls/mpr/wnetpriv.h
+++ b/dlls/mpr/wnetpriv.h
@@ -21,7 +21,7 @@
 #ifndef __WNET_PRIV_H__
 #define __WNET_PRIV_H__
 
-void wnetInit(HINSTANCE hInstDll);
-void wnetFree(void);
+void wnetInit(HINSTANCE hInstDll) DECLSPEC_HIDDEN;
+void wnetFree(void) DECLSPEC_HIDDEN;
 
 #endif /* ndef __WNET_PRIV_H__ */