diff --git a/bashrc.jssh b/bashrc.jssh
index 47c2a9b..ed15d57 100644
--- a/bashrc.jssh
+++ b/bashrc.jssh
@@ -11,8 +11,8 @@ alias la='ls -A'
 alias l='ls -CF'
 alias sl='ls'
 [ -x $JSSHHOME/sshrc.jssh ] && alias jssh="$JSSHHOME/sshrc.jssh"
-[ -r $JSSHHOME/screenrc.jssh ] && alias screen="screen -c $JSSHHOME/screenrc.jssh"
-[ -r $JSSHHOME/vimrc.jssh ] && export VIMINIT="let \$MYVIMRC='$JSSHHOME/vimrc.jssh' | source \$MYVIMRC"
+which screen >/dev/null 2>&1 && [ -r $JSSHHOME/screenrc.jssh ] && alias screen="screen -c $JSSHHOME/screenrc.jssh"
+which vim >/dev/null 2>&1 && [ -r $JSSHHOME/vimrc.jssh ] && export VIMINIT="let \$MYVIMRC='$JSSHHOME/vimrc.jssh' | source \$MYVIMRC"
 PROMPT_COMMAND=__prompt_command
 __prompt_command() {
     local curr_exit="$?"