diff --git a/deploy_gb.sh b/deploy_gb.sh
index c95ddd7..9aef5cc 100644
--- a/deploy_gb.sh
+++ b/deploy_gb.sh
@@ -62,6 +62,14 @@ if ! ss -tln | grep -q ':5001 '; then
   exit 1
 fi
 
+# 3.5 Fix Blazor WASM runtime filename mismatch
+# ASP.NET Core 10 uses blazor.webassembly.js but pages reference blazor.web.js
+echo "=== Fixing Blazor WASM Runtime Filename ==="
+if [ -f "$DEPLOY_DIR/wwwroot/_framework/blazor.webassembly.js" ] && [ ! -f "$DEPLOY_DIR/wwwroot/_framework/blazor.web.js" ]; then
+  ln -s blazor.webassembly.js "$DEPLOY_DIR/wwwroot/_framework/blazor.web.js"
+  echo "✓ Created symlink: blazor.web.js -> blazor.webassembly.js"
+fi
+
 # 4. Start the new app on the target port
 echo "=== Starting New App on Port $TARGET_PORT ==="
 cd "$DEPLOY_DIR"