--- a/dlls/crypt32/crypt32_private.h	2020-01-21 11:03:21.000000000 -0600
+++ b/dlls/crypt32/crypt32_private.h	2020-01-22 09:09:42.545954092 -0600
@@ -152,7 +152,7 @@
  */
 HCRYPTPROV WINAPI I_CryptGetDefaultCryptProv(ALG_ID);
 
-HINSTANCE hInstance DECLSPEC_HIDDEN;
+extern HINSTANCE hInstance DECLSPEC_HIDDEN;
 
 void crypt_oid_init(void) DECLSPEC_HIDDEN;
 void crypt_oid_free(void) DECLSPEC_HIDDEN;