diff --git a/README.md b/README.md
index 6c1a1c8..3cf5130 100644
--- a/README.md
+++ b/README.md
@@ -90,7 +90,7 @@ This functionality is too OS/environment-specific and thus can't be built **into
 - for Linux + X11 GUI: `export BOPHER_CLIP='xsel -bi'`
 - for Linux + Wayland (with `wl-clipboard` package): `export BOPHER_CLIP=wlcopy`
 - for macOS: `export BOPHER_CLIP=pbcopy`
-- for GNU Screen environment (on any OS): `export BOPHER_CLIP='(read -rsd$'\x04' x; screen -X register . "$x")`
+- for GNU Screen environment (on any OS): `export BOPHER_CLIP='(read -rsd$'\x04' x; screen -X register . "$x")'`
 
 Even then, this functionality isn't guaranteed to work on any system. Please verify by yourselves how your operating environment handles the clipboard and adjust this variable accordingly.