diff --git a/src/ui.ts b/src/ui.ts
index 064ce0a..39c4b4f 100644
--- a/src/ui.ts
+++ b/src/ui.ts
@@ -119,7 +119,7 @@ function createButtonStyle(): string {
     }
     @keyframes ocvd-spin {
       from { transform: rotate(0deg); }
-      to { transform: rotate(360deg); }
+      to { transform: rotate(-360deg); }
     }
     .ocvd-spin {
       animation: ocvd-spin 0.8s linear infinite;