diff --git a/imgui-glium-renderer/src/lib.rs b/imgui-glium-renderer/src/lib.rs
index 723fae9..eddc659 100644
--- a/imgui-glium-renderer/src/lib.rs
+++ b/imgui-glium-renderer/src/lib.rs
@@ -276,7 +276,7 @@ impl Renderer {
 }
 
 fn upload_font_texture(
-    mut fonts: imgui::FontAtlasRefMut,
+    fonts: &mut imgui::FontAtlas,
     ctx: &Rc<Context>,
 ) -> Result<Texture, RendererError> {
     let texture = fonts.build_rgba32_texture();
diff --git a/imgui-glow-renderer/src/lib.rs b/imgui-glow-renderer/src/lib.rs
index eacdd90..87fd214 100644
--- a/imgui-glow-renderer/src/lib.rs
+++ b/imgui-glow-renderer/src/lib.rs
@@ -1042,7 +1042,7 @@ pub type RenderError = String;
 
 fn prepare_font_atlas<T: TextureMap>(
     gl: &Context,
-    mut fonts: imgui::FontAtlasRefMut,
+    fonts: &mut imgui::FontAtlas,
     texture_map: &mut T,
 ) -> Result<GlTexture, InitError> {
     #![allow(clippy::cast_possible_wrap)]