diff --git a/docs/installation/basic-installation.rst b/docs/installation/basic-installation.rst
index 04d9aca02..c2f889f0e 100644
--- a/docs/installation/basic-installation.rst
+++ b/docs/installation/basic-installation.rst
@@ -1,3 +1,11 @@
+.. raw:: html
+
+    <script>
+    document.addEventListener('DOMContentLoaded', function() {
+      activateTab(getOS());
+    });
+    </script>
+
 .. _basic-installation:
 
 Basic Installation
diff --git a/docs/installation/building-from-source.rst b/docs/installation/building-from-source.rst
index 6b24eeffa..05e657272 100644
--- a/docs/installation/building-from-source.rst
+++ b/docs/installation/building-from-source.rst
@@ -1,3 +1,11 @@
+.. raw:: html
+
+    <script>
+    document.addEventListener('DOMContentLoaded', function() {
+      activateTab(getOS());
+    });
+    </script>
+
 .. _Building on Linux:
 .. _Building on macOS:
 .. _Building on Windows: