diff --git a/src/snek/system/template.py b/src/snek/system/template.py
index 7ee0d0f..2974afc 100644
--- a/src/snek/system/template.py
+++ b/src/snek/system/template.py
@@ -91,7 +91,7 @@ def embed_youtube(text):
     for element in soup.find_all("a"):
         if (
             element.attrs["href"].startswith("https://www.you")
-            and "v=" in element.attrs["href"] or "si=" in element.attrs["href"]
+            and ("v=" in element.attrs["href"] or "si=" in element.attrs["href"])
         ):
             video_name = "?" + "?".join(element.attrs["href"].split("?")[1:])
             embed_template = f'<br /><iframe width="560" height="315" src="https://www.youtube.com/embed/{video_name}" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>'