index 5dc66ab..826d4d8 100644
--- a/ruby/caca-canvas.c
+++ b/ruby/caca-canvas.c
@@ -16,6 +16,7 @@
 #include <errno.h>
 #include "caca-dither.h"
 #include "caca-font.h"
+#include "caca_internals.h"
 #include "common.h"
 
 VALUE cCanvas;
@@ -143,7 +143,7 @@ static VALUE put_str(VALUE self, VALUE x
     return self;
 }
 
-static VALUE get_attr(VALUE self, VALUE x, VALUE y)
+static VALUE get_attr(VALUE self, VALUE x, VALUE y, VALUE)
 {
     unsigned long int ch;
     ch = caca_get_attr(_SELF, NUM2INT(x), NUM2INT(y));
@@ -454,7 +454,7 @@ static VALUE fill_triangle(VALUE self, V
     return self;
 }
 
-static VALUE fill_triangle_textured(VALUE self, VALUE coords, VALUE texture, VALUE uv)
+static VALUE fill_triangle_textured(VALUE self, VALUE coords, VALUE texture, VALUE uv, VALUE)
 {
     caca_canvas_t *ctexture;
     int i, l;
index ac29daf..36020a9 100644
--- a/ruby/caca-display.c
+++ b/ruby/caca-display.c
@@ -226,7 +226,7 @@ static VALUE get_event(VALUE self, VALUE event_mask, VALUE timeout)
     return e;
 }
 
-static VALUE driver_list(void)
+static VALUE driver_list(VALUE)
 {
     VALUE ary;
     char const* const* list;
index 705f928..c5f5d27 100644
--- a/ruby/caca-font.c
+++ b/ruby/caca-font.c
@@ -41,7 +41,7 @@ static VALUE font_initialize(VALUE self, VALUE name)
     return self;
 }
 
-static VALUE font_list(void)
+static VALUE font_list(VALUE)
 {
     VALUE ary;
     char const* const* list;
Index: libcaca-0.99.beta20/ruby/common.h
===================================================================
--- libcaca-0.99.beta20.orig/ruby/common.h
+++ libcaca-0.99.beta20/ruby/common.h
@@ -16,7 +16,7 @@
 #define _SELF  (DATA_PTR(self))
 
 #define get_singleton_double_list(x)                      \
-static VALUE x##_list(void)                     \
+static VALUE x##_list(VALUE)                    \
 {                                               \
     VALUE ary, ary2;                            \
     char const* const* list;                    \