diff --git a/backend/src/services/martin.rs b/backend/src/services/martin.rs
index 2129066..881761e 100644
--- a/backend/src/services/martin.rs
+++ b/backend/src/services/martin.rs
@@ -13,6 +13,7 @@ impl MartinService {
         Self {
             client: reqwest::Client::builder()
                 .timeout(std::time::Duration::from_secs(10))
+                .no_gzip()  // Don't decompress; vector_map_tiles expects gzip-compressed MVT
                 .build()
                 .expect("Failed to build HTTP client"),
             base_url: config.martin_url.clone(),