diff --git a/doctor.sh b/doctor.sh
index 022168b..ae72474 100755
--- a/doctor.sh
+++ b/doctor.sh
@@ -13,6 +13,10 @@ CYAN='\033[0;36m'
 MAGENTA='\033[0;35m'
 BOLD='\033[1m'
 NC='\033[0m' # No Color
+# Variable for the GitHub host, defaults to 'github.com'
+GITHUB_HOST="${GITHUB_HOST:-github.com}"
+GITHUB_HOST="${GITHUB_HOST#https://}"
+GITHUB_HOST="${GITHUB_HOST#http://}"
 
 # Resolve the sqlite3 command, handling Windows (Git Bash / MSYS2) paths
 SQLITE3_CMD=""
@@ -1168,7 +1172,7 @@ run_setup() {
             echo -e "  ${BLUE}Classic PAT (fine-grained PATs do not currently support Copilot):${NC}"
             echo "    • copilot"
             echo ""
-            echo -e "${YELLOW}Create one at: https://github.com/settings/tokens${NC}"
+            echo -e "${YELLOW}Create one at: https://${GITHUB_HOST}/settings/tokens${NC}"
             echo ""
             # Read from /dev/tty explicitly to ensure correct capture in all terminal environments
             echo -n "Please provide the PAT and press Enter: "
@@ -1185,7 +1189,7 @@ run_setup() {
             # --- CLI authentication (existing flow) ---
             echo -e "${BLUE}🔐 Authenticating with GitHub Copilot...${NC}"
             echo ""
-            if ! copilot login; then
+            if ! copilot login --host "https://${GITHUB_HOST}"; then
                 echo ""
                 echo -e "${RED}❌ Authentication failed. Please try again.${NC}"
                 return 1