diff --git a/lib/shared-functions.sh b/lib/shared-functions.sh
index a35d17c..135e035 100644
--- a/lib/shared-functions.sh
+++ b/lib/shared-functions.sh
@@ -223,5 +223,5 @@ function read_variable() {
 function read_configuration() {
   local name=$1
   grep -E "^$name=" "$TOOLKIT_ROOT/config/overleaf.rc" \
-  | sed -r "s/^$name=([\"']?)(.+)\1\$/\2/"
+  | sed -r "s/^$name=([\"']?)(.+)\$/\2/"
 }