diff --git a/crates/eframe/src/web/storage.rs b/crates/eframe/src/web/storage.rs
index 170798dc6..baa3ad83b 100644
--- a/crates/eframe/src/web/storage.rs
+++ b/crates/eframe/src/web/storage.rs
@@ -9,7 +9,19 @@ pub fn local_storage_get(key: &str) -> Option<String> {
 
 /// Write data to local storage.
 pub fn local_storage_set(key: &str, value: &str) {
-    local_storage().map(|storage| storage.set_item(key, value));
+    match local_storage() {
+        Some(storage) => {
+            if let Err(err) = storage.set_item(key, value) {
+                log::warn!(
+                    "local_storage_set failed: key={key}, err={}",
+                    crate::web::string_from_js_value(&err)
+                );
+            }
+        }
+        None => {
+            log::warn!("local_storage unavailable");
+        }
+    }
 }
 
 #[cfg(feature = "persistence")]