6 files changed, 6 insertions, 6 deletions
diff --git a/ext/win32ole/win32ole.c b/ext/win32ole/win32ole.c
index 72b67fb2eb..b21d4385cc 100644
--- a/ext/win32ole/win32ole.c
+++ b/ext/win32ole/win32ole.c
@@ -375,7 +375,7 @@ static /* [local] */ HRESULT ( STDMETHODCALLTYPE Invoke )(
 }
 
 BOOL
-ole_initialized()
+ole_initialized(void)
 {
     return g_ole_initialized;
 }
diff --git a/ext/win32ole/win32ole_event.c b/ext/win32ole/win32ole_event.c
index 55b884ff1b..ad9cb3d3f8 100644
--- a/ext/win32ole/win32ole_event.c
+++ b/ext/win32ole/win32ole_event.c
@@ -1240,7 +1240,7 @@ fev_get_handler(VALUE self)
 }
 
 void
-Init_win32ole_event()
+Init_win32ole_event(void)
 {
     ary_ole_event = rb_ary_new();
     rb_gc_register_mark_object(ary_ole_event);
diff --git a/ext/win32ole/win32ole_param.c b/ext/win32ole/win32ole_param.c
index 661bd23578..9d28a89161 100644
--- a/ext/win32ole/win32ole_param.c
+++ b/ext/win32ole/win32ole_param.c
@@ -400,7 +400,7 @@ foleparam_inspect(VALUE self)
 }
 
 void
-Init_win32ole_param()
+Init_win32ole_param(void)
 {
     cWIN32OLE_PARAM = rb_define_class("WIN32OLE_PARAM", rb_cObject);
     rb_define_alloc_func(cWIN32OLE_PARAM, foleparam_s_allocate);
diff --git a/ext/win32ole/win32ole_record.c b/ext/win32ole/win32ole_record.c
index b7ce75bbee..3944ffadf6 100644
--- a/ext/win32ole/win32ole_record.c
+++ b/ext/win32ole/win32ole_record.c
@@ -563,7 +563,7 @@ folerecord_inspect(VALUE self)
 }
 
 void
-Init_win32ole_record()
+Init_win32ole_record(void)
 {
     cWIN32OLE_RECORD = rb_define_class("WIN32OLE_RECORD", rb_cObject);
     rb_define_alloc_func(cWIN32OLE_RECORD, folerecord_s_allocate);
diff --git a/ext/win32ole/win32ole_typelib.c b/ext/win32ole/win32ole_typelib.c
index f5ecd4c05c..9a8fdd56c3 100644
--- a/ext/win32ole/win32ole_typelib.c
+++ b/ext/win32ole/win32ole_typelib.c
@@ -811,7 +811,7 @@ foletypelib_inspect(VALUE self)
 }
 
 void
-Init_win32ole_typelib()
+Init_win32ole_typelib(void)
 {
     cWIN32OLE_TYPELIB = rb_define_class("WIN32OLE_TYPELIB", rb_cObject);
     rb_define_singleton_method(cWIN32OLE_TYPELIB, "typelibs", foletypelib_s_typelibs, 0);
diff --git a/ext/win32ole/win32ole_variant.c b/ext/win32ole/win32ole_variant.c
index b0cc5ee5df..ef5227b5c9 100644
--- a/ext/win32ole/win32ole_variant.c
+++ b/ext/win32ole/win32ole_variant.c
@@ -665,7 +665,7 @@ folevariant_set_value(VALUE self, VALUE val)
 }
 
 void
-Init_win32ole_variant()
+Init_win32ole_variant(void)
 {
     cWIN32OLE_VARIANT = rb_define_class("WIN32OLE_VARIANT", rb_cObject);
     rb_define_alloc_func(cWIN32OLE_VARIANT, folevariant_s_allocate);