diff --git a/cogl/cogl-buffer.c b/cogl/cogl-buffer.c
index 49374706f..89e0a0579 100644
--- a/cogl/cogl-buffer.c
+++ b/cogl/cogl-buffer.c
@@ -267,7 +267,7 @@ cogl_buffer_unmap_EXP (CoglHandle handle)
   if (!COGL_BUFFER_FLAG_IS_SET (buffer, MAPPED))
     return;
 
-  return buffer->vtable->unmap (buffer);
+  buffer->vtable->unmap (buffer);
 }
 
 gboolean
diff --git a/cogl/cogl-sub-texture.c b/cogl/cogl-sub-texture.c
index 53b4d58cc..bd23c857f 100644
--- a/cogl/cogl-sub-texture.c
+++ b/cogl/cogl-sub-texture.c
@@ -317,7 +317,7 @@ _cogl_sub_texture_transform_coords_to_gl (CoglTexture *tex,
   *t = ((*t * sub_tex->sub_height + sub_tex->sub_y) /
         cogl_texture_get_height (sub_tex->full_texture));
 
-  return _cogl_texture_transform_coords_to_gl (sub_tex->full_texture, s, t);
+  _cogl_texture_transform_coords_to_gl (sub_tex->full_texture, s, t);
 }
 
 static gboolean
diff --git a/cogl/cogl-texture.c b/cogl/cogl-texture.c
index 4c6d862be..77005eb9b 100644
--- a/cogl/cogl-texture.c
+++ b/cogl/cogl-texture.c
@@ -734,7 +734,7 @@ _cogl_texture_ensure_non_quad_rendering (CoglHandle handle)
 
   tex = COGL_TEXTURE (handle);
 
-  return tex->vtable->ensure_non_quad_rendering (tex);
+  tex->vtable->ensure_non_quad_rendering (tex);
 }
 
 gboolean