diff --git a/src/proto/crypt.pro b/src/proto/crypt.pro
index 682fe45..d6c7b7f 100644
--- a/src/proto/crypt.pro
+++ b/src/proto/crypt.pro
@@ -1,4 +1,5 @@
 /* crypt.c */
+int sodium_enabled(int verbose);
 int crypt_method_nr_from_name(char_u *name);
 int crypt_method_nr_from_magic(char *ptr, int len);
 int crypt_works_inplace(cryptstate_T *state);
diff --git a/src/proto/os_win32.pro b/src/proto/os_win32.pro
index dac2b71..b3c85b7 100644
--- a/src/proto/os_win32.pro
+++ b/src/proto/os_win32.pro
@@ -1,5 +1,5 @@
 /* os_win32.c */
-HINSTANCE vimLoadLib(char *name);
+HINSTANCE vimLoadLib(const char *name);
 int mch_is_gui_executable(void);
 HINSTANCE find_imported_module_by_funcname(HINSTANCE hInst, const char *funcname);
 void *get_dll_import_func(HINSTANCE hInst, const char *funcname);