diff --git a/gui/apply-boulder b/gui/apply-boulder
index a139a17..105cf31 100755
--- a/gui/apply-boulder
+++ b/gui/apply-boulder
@@ -5,7 +5,7 @@ set -e
 baseDir=$(cd $(dirname $0) && pwd)
 dataDir="$baseDir/data"
 
-PKI_DNS=$(grep dns $dataDir/config.json | perl -p0e 's/.*?:\s+(.*)/\1/' | sed -e 's/\",//g' | sed -e 's/\"//g')
+PKI_DNS=$(grep "\"dns\"" $dataDir/config.json | perl -p0e 's/.*?:\s+(.*)/\1/' | sed -e 's/\",//g' | sed -e 's/\"//g')
 if [ "$PKI_DNS" == "" ]; then
     PKI_DNS="10.55.55.10:53"
 fi