diff --git a/martin/src/sprites/mod.rs b/martin/src/sprites/mod.rs
index 05900d34c..05e17694b 100644
--- a/martin/src/sprites/mod.rs
+++ b/martin/src/sprites/mod.rs
@@ -71,9 +71,7 @@ impl ConfigExtras for SpriteConfig {
 }
 
 #[derive(Debug, Clone, Default)]
-pub struct SpriteSources {
-    sources: HashMap<String, SpriteSource>,
-}
+pub struct SpriteSources(HashMap<String, SpriteSource>);
 
 impl SpriteSources {
     pub fn resolve(config: &mut FileConfigEnum<SpriteConfig>) -> FileResult<Self> {
@@ -112,7 +110,7 @@ impl SpriteSources {
     pub fn get_catalog(&self) -> SpriteResult<SpriteCatalog> {
         // TODO: all sprite generation should be pre-cached
         let mut entries = SpriteCatalog::new();
-        for (id, source) in &self.sources {
+        for (id, source) in &self.0 {
             let paths = get_svg_input_paths(&source.path, true)
                 .map_err(|e| SpriteProcessingError(e, source.path.clone()))?;
             let mut images = Vec::with_capacity(paths.len());
@@ -133,7 +131,7 @@ impl SpriteSources {
         if path.is_file() {
             warn!("Ignoring non-directory sprite source {id} from {disp_path}");
         } else {
-            match self.sources.entry(id) {
+            match self.0.entry(id) {
                 Entry::Occupied(v) => {
                     warn!("Ignoring duplicate sprite source {} from {disp_path} because it was already configured for {}",
                     v.key(), v.get().path.display());
@@ -158,7 +156,7 @@ impl SpriteSources {
         let sprite_ids = ids
             .split(',')
             .map(|id| {
-                self.sources
+                self.0
                     .get(id)
                     .ok_or_else(|| SpriteError::SpriteNotFound(id.to_string()))
             })
@@ -242,7 +240,7 @@ mod tests {
             PathBuf::from("../tests/fixtures/sprites/src2"),
         ]);
 
-        let sprites = SpriteSources::resolve(&mut cfg).unwrap().sources;
+        let sprites = SpriteSources::resolve(&mut cfg).unwrap().0;
         assert_eq!(sprites.len(), 2);
 
         //.sdf => generate sdf from png, add sdf == true