diff --git a/docs/installation.rst b/docs/installation.rst
index 6b5a19fde7..068f2da572 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -34,7 +34,7 @@ To achieve this, you can add this snippet in your ``.bash_profile``\ :
 
 .. code-block::
 
-   if [[ -f ~/.bashrc ]]; then
+   if [[ $- == *"i"* && -f ~/.bashrc ]]; then
      source ~/.bashrc
    fi