diff --git a/bash/decoders/dump1090-mutability.sh b/bash/decoders/dump1090-mutability.sh
old mode 100644
new mode 100755
index 8093d98..15ba9a4
--- a/bash/decoders/dump1090-mutability.sh
+++ b/bash/decoders/dump1090-mutability.sh
@@ -157,10 +157,10 @@ echo "from the website http://www.heywhatsthat.com. Some work will be required o
 echo "part including visiting http://www.heywhatsthat.com and generating a new"
 echo "panorama set to your location."
 echo -e "\033[37m"
-read -p "Do you wish to add terrain limit rings to the dump1090 map?" ADDTERRAINRINGS
+read -p "Do you wish to add terrain limit rings to the dump1090 map? [Y/n] " ADDTERRAINRINGS
 
-if [[ $ADDTERRAINRINGS =~ ^[Yy]$ ]]; then
-    echo -e "\033[33m"
+if [[ ! $ADDTERRAINRINGS =~ ^[Nn]$ ]]; then 
+    echo -e "\033[31m"
     echo "READ THE FOLLOWING INSTRUCTION CAREFULLY!"
     echo ""
     echo -e "\033[33m"
@@ -189,7 +189,7 @@ if [[ $ADDTERRAINRINGS =~ ^[Yy]$ ]]; then
     echo -e "\033[33m"
     echo "Downloading JSON data pertaining to the panorama ID you supplied..."
     echo -e "\033[37m"
-    sudo wget -O /usr/share/dump1090-mutability/html/upintheair.json 'http://www.heywhatsthat.com/api/upintheair.json?view=${HEYWHATSTHATVIEWID}&refraction=0.25&alts=3048,12192'
+    sudo wget -O /usr/share/dump1090-mutability/html/upintheair.json http://www.heywhatsthat.com/api/upintheair.json?view=${HEYWHATSTHATVIEWID}&refraction=0.25&alts=3048,12192
 fi
 
 ## DISPLAY MESSAGE STATING DUMP1090-MUTABILITY SETUP IS COMPLETE