diff --git a/webserver.h b/webserver.h
index 3e668e7..bf65a86 100644
--- a/webserver.h
+++ b/webserver.h
@@ -5,8 +5,6 @@
 
 #define MAX_LINE_LENGTH 2000
 
-extern long cm;
-
 class WebServer {
 private:
   Stream& atSerial;
@@ -15,6 +13,8 @@ private:
   uint8_t bufferPosition = 0;
 
 public:
+  long cm;
+
   // Constructor takes in two streams for AT command and debugging (over Serial), remember to use RP2040 as the board!
   WebServer(Stream& atSerial, Stream& debugSerial);