diff --git a/lib/actions/appointments.ts b/lib/actions/appointments.ts
index b094928..11badc6 100644
--- a/lib/actions/appointments.ts
+++ b/lib/actions/appointments.ts
@@ -147,9 +147,10 @@ export async function createAppointment(
     let errorMessage = `Server error (${response.status}): ${response.statusText || 'Internal Server Error'}`;
     
     // Try to find error details in HTML
-    const errorMatch = responseText.match(/<pre[^>]*>(.*?)<\/pre>/is) || 
-                      responseText.match(/<h1[^>]*>(.*?)<\/h1>/is) ||
-                      responseText.match(/<title[^>]*>(.*?)<\/title>/is);
+    // Use [\s\S] instead of . with s flag for better compatibility
+    const errorMatch = responseText.match(/<pre[^>]*>([\s\S]*?)<\/pre>/i) || 
+                      responseText.match(/<h1[^>]*>([\s\S]*?)<\/h1>/i) ||
+                      responseText.match(/<title[^>]*>([\s\S]*?)<\/title>/i);
     
     if (errorMatch && errorMatch[1]) {
       const htmlError = errorMatch[1].replace(/<[^>]*>/g, '').trim();