diff --git a/src/io/mod.rs b/src/io/mod.rs
index d4753861..011797fa 100644
--- a/src/io/mod.rs
+++ b/src/io/mod.rs
@@ -6,14 +6,16 @@ pub mod cache;
 pub mod static_tile_fetcher;
 pub mod web_tile_fetcher;
 
-#[async_trait(?Send)]
+#[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
+#[cfg_attr(not(target_arch = "wasm32"), async_trait)]
 pub trait HttpFetcher {
     fn new() -> Self;
 
     async fn fetch(&self, url: &str) -> Result<Vec<u8>, Error>;
 }
 
-#[async_trait(?Send)]
+#[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
+#[cfg_attr(not(target_arch = "wasm32"), async_trait)]
 pub trait TileFetcher {
     fn new() -> Self;
 
diff --git a/src/io/static_tile_fetcher.rs b/src/io/static_tile_fetcher.rs
index 162e5c45..8e382d97 100644
--- a/src/io/static_tile_fetcher.rs
+++ b/src/io/static_tile_fetcher.rs
@@ -19,7 +19,8 @@ impl StaticTileFetcher {
     }
 }
 
-#[async_trait(?Send)]
+#[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
+#[cfg_attr(not(target_arch = "wasm32"), async_trait)]
 impl TileFetcher for StaticTileFetcher {
     fn new() -> Self {
         Self {}
diff --git a/src/io/web_tile_fetcher.rs b/src/io/web_tile_fetcher.rs
index 96e6a671..bbb1197b 100644
--- a/src/io/web_tile_fetcher.rs
+++ b/src/io/web_tile_fetcher.rs
@@ -8,7 +8,8 @@ pub struct WebTileFetcher {
     http_fetcher: PlatformHttpFetcher,
 }
 
-#[async_trait(?Send)]
+#[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
+#[cfg_attr(not(target_arch = "wasm32"), async_trait)]
 impl TileFetcher for WebTileFetcher {
     fn new() -> Self {
         Self {
diff --git a/src/platform/noweb/mod.rs b/src/platform/noweb/mod.rs
index a776d0f1..4ed1bc1c 100644
--- a/src/platform/noweb/mod.rs
+++ b/src/platform/noweb/mod.rs
@@ -25,7 +25,8 @@ pub struct PlatformHttpFetcher {
     client: ClientWithMiddleware,
 }
 
-#[async_trait(?Send)]
+#[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
+#[cfg_attr(not(target_arch = "wasm32"), async_trait)]
 impl HttpFetcher for PlatformHttpFetcher {
     fn new() -> Self {
         let client = ClientBuilder::new(Client::new())
diff --git a/src/platform/web/http_fetcher.rs b/src/platform/web/http_fetcher.rs
index 1e9552e0..010465b6 100644
--- a/src/platform/web/http_fetcher.rs
+++ b/src/platform/web/http_fetcher.rs
@@ -16,7 +16,8 @@ impl From<JsValue> for Error {
 
 pub struct PlatformHttpFetcher;
 
-#[async_trait(?Send)]
+#[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
+#[cfg_attr(not(target_arch = "wasm32"), async_trait)]
 impl HttpFetcher for PlatformHttpFetcher {
     fn new() -> Self {
         Self {}