diff --git a/src/examples/eolian_cxx/colourable.c b/src/examples/eolian_cxx/colourable.c
index 001665f956..f4f16273ec 100644
--- a/src/examples/eolian_cxx/colourable.c
+++ b/src/examples/eolian_cxx/colourable.c
@@ -83,7 +83,7 @@ _ns_colourable_colour_mask(Eo *obj EINA_UNUSED, Colourable_Data *self, int mask)
 }
 
 void
-_ns_colourable_composite_colour_get(Eo *obj EINA_UNUSED, Colourable_Data *self, int* r, int* g, int* b)
+_ns_colourable_composite_colour_get(const Eo *obj EINA_UNUSED, Colourable_Data *self, int* r, int* g, int* b)
 {
    *r = self->r;
    *g = self->g;
@@ -104,7 +104,7 @@ _ns_colourable_composite_colour_set(Eo *obj EINA_UNUSED, Colourable_Data *self,
 }
 
 int
-_ns_colourable_colour_get(Eo *obj EINA_UNUSED, Colourable_Data *self)
+_ns_colourable_colour_get(const Eo *obj EINA_UNUSED, Colourable_Data *self)
 {
    int rgb =
      ((self->r << 16)& 0x00ff0000) |
diff --git a/src/examples/eolian_cxx/colourablesquare.c b/src/examples/eolian_cxx/colourablesquare.c
index a6ea21359e..6b6d787a9f 100644
--- a/src/examples/eolian_cxx/colourablesquare.c
+++ b/src/examples/eolian_cxx/colourablesquare.c
@@ -38,7 +38,7 @@ _ns_colourablesquare_size_constructor(Eo *obj EINA_UNUSED, ColourableSquare_Data
 }
 
 static int
-_ns_colourablesquare_size_get(Eo *obj EINA_UNUSED, ColourableSquare_Data *self)
+_ns_colourablesquare_size_get(const Eo *obj EINA_UNUSED, ColourableSquare_Data *self)
 {
    DBG("_ns_colourablesquare_size_get() => %d\n", self->size);
    return self->size;