diff --git a/frontend/src/app/render_wasm/serializers/fills.cljs b/frontend/src/app/render_wasm/serializers/fills.cljs
index f4f395b66..bef0c3522 100644
--- a/frontend/src/app/render_wasm/serializers/fills.cljs
+++ b/frontend/src/app/render_wasm/serializers/fills.cljs
@@ -25,7 +25,7 @@
     (.setFloat32 dview (+ offset 12) end-y true)
     (.setFloat32 dview (+ offset 16) opacity true)
     (.setFloat32 dview (+ offset 20) width true)
-    (.setUint32  dview (+ offset 24) (count stops) true)
+    (.setUint8   dview (+ offset 24) (count stops) true)
     (loop [stops (seq stops) offset (+ offset GRADIENT-BASE-SIZE)]
       (if (empty? stops)
         offset
diff --git a/render-wasm/src/shapes/fills.rs b/render-wasm/src/shapes/fills.rs
index f85ba7506..3d75f53f1 100644
--- a/render-wasm/src/shapes/fills.rs
+++ b/render-wasm/src/shapes/fills.rs
@@ -17,7 +17,8 @@ pub struct RawGradientData {
     end_y: f32,
     opacity: f32,
     width: f32,
-    stop_count: u32,
+    stop_count: u8,
+    _padding: [u8; 3],
     stops: [RawStopData; MAX_GRADIENT_STOPS],
 }
 
@@ -30,7 +31,8 @@ impl From<[u8; RAW_GRADIENT_DATA_SIZE]> for RawGradientData {
             end_y: f32::from_le_bytes([bytes[12], bytes[13], bytes[14], bytes[15]]),
             opacity: f32::from_le_bytes([bytes[16], bytes[17], bytes[18], bytes[19]]),
             width: f32::from_le_bytes([bytes[20], bytes[21], bytes[22], bytes[23]]),
-            stop_count: u32::from_le_bytes([bytes[24], bytes[25], bytes[26], bytes[27]]),
+            stop_count: bytes[24],
+            _padding: [0; 3],
             // FIXME: 2025-04-22: use `array_chunks` once the next release is out
             //        and we update our devenv.
             // See https://github.com/rust-lang/rust/issues/74985