diff --git a/bin/fzf-tmux b/bin/fzf-tmux
index 4db037c..d945c15 100755
--- a/bin/fzf-tmux
+++ b/bin/fzf-tmux
@@ -50,13 +50,19 @@ cleanup() {
 }
 trap cleanup EXIT SIGINT SIGTERM
 
+fail() {
+  >&2 echo "$1"
+  exit 1
+}
+fzf=$(which fzf 2> /dev/null) || fail "fzf executable not found"
+
 mkfifo $fifo2
 mkfifo $fifo3
 if [ -t 0 ]; then
-  tmux split-window $opt 'bash -c "fzf '"$fzf_args"' > '$fifo2'; echo \$? > '$fifo3'"'
+  tmux split-window $opt 'sh -c "'$fzf' '"$fzf_args"' > '$fifo2'; echo \$? > '$fifo3'"'
 else
   mkfifo $fifo1
-  tmux split-window $opt 'bash -c "fzf '"$fzf_args"' < '$fifo1' > '$fifo2'; echo \$? > '$fifo3'"'
+  tmux split-window $opt 'sh -c "'$fzf' '"$fzf_args"' < '$fifo1' > '$fifo2'; echo \$? > '$fifo3'"'
   cat <&0 > $fifo1 &
 fi
 cat $fifo2