3 files changed, 3 insertions, 3 deletions
diff --git a/ext/win32ole/win32ole_method.c b/ext/win32ole/win32ole_method.c
index 051ba429c9..4d3a398b14 100644
--- a/ext/win32ole/win32ole_method.c
+++ b/ext/win32ole/win32ole_method.c
@@ -901,7 +901,7 @@ folemethod_inspect(VALUE self)
     return default_inspect(self, "WIN32OLE_METHOD");
 }
 
-void Init_win32ole_method()
+void Init_win32ole_method(void)
 {
     cWIN32OLE_METHOD = rb_define_class("WIN32OLE_METHOD", rb_cObject);
     rb_define_alloc_func(cWIN32OLE_METHOD, folemethod_s_allocate);
diff --git a/ext/win32ole/win32ole_type.c b/ext/win32ole/win32ole_type.c
index c5ae53c3aa..48df6707e8 100644
--- a/ext/win32ole/win32ole_type.c
+++ b/ext/win32ole/win32ole_type.c
@@ -883,7 +883,7 @@ foletype_inspect(VALUE self)
     return default_inspect(self, "WIN32OLE_TYPE");
 }
 
-void Init_win32ole_type()
+void Init_win32ole_type(void)
 {
     cWIN32OLE_TYPE = rb_define_class("WIN32OLE_TYPE", rb_cObject);
     rb_define_singleton_method(cWIN32OLE_TYPE, "ole_classes", foletype_s_ole_classes, 1);
diff --git a/ext/win32ole/win32ole_variable.c b/ext/win32ole/win32ole_variable.c
index 85f3341f98..fb67fdd0fc 100644
--- a/ext/win32ole/win32ole_variable.c
+++ b/ext/win32ole/win32ole_variable.c
@@ -351,7 +351,7 @@ folevariable_inspect(VALUE self)
     return make_inspect("WIN32OLE_VARIABLE", detail);
 }
 
-void Init_win32ole_variable()
+void Init_win32ole_variable(void)
 {
     cWIN32OLE_VARIABLE = rb_define_class("WIN32OLE_VARIABLE", rb_cObject);
     rb_define_method(cWIN32OLE_VARIABLE, "name", folevariable_name, 0);