diff --git a/.bashrc b/.bashrc
index 3489375..a2d1021 100644
--- a/.bashrc
+++ b/.bashrc
@@ -39,7 +39,7 @@ shopt -s histappend
 PROMPT_COMMAND='history -a'
 
 # Allow ctrl-S for history navigation (with ctrl-R)
-stty -ixon
+[[ $- == *i* ]] && stty -ixon
 
 # Ignore case on auto-completion
 # Note: bind used instead of sticking these in .inputrc