diff --git a/packages/gatsby-plugin-google-tagmanager/src/gatsby-ssr.js b/packages/gatsby-plugin-google-tagmanager/src/gatsby-ssr.js
index 66ab40d365c45..2f62a308bd199 100644
--- a/packages/gatsby-plugin-google-tagmanager/src/gatsby-ssr.js
+++ b/packages/gatsby-plugin-google-tagmanager/src/gatsby-ssr.js
@@ -35,7 +35,7 @@ exports.onRenderBody = (
               height="0"
               width="0"
               style="display: none; visibility: hidden"
-            />`,
+            ></iframe>`,
         }}
       />,
     ])