diff --git a/src/local/BLELocalDevice.h b/src/local/BLELocalDevice.h
index 4b0ea26b..cabe0e7c 100644
--- a/src/local/BLELocalDevice.h
+++ b/src/local/BLELocalDevice.h
@@ -67,13 +67,12 @@ class BLELocalDevice {
   virtual void stopScan();
 
   virtual BLEDevice central();
-  virtual BLEDevice available(); 
-  int centralCount();
-  BLEDevice peripheral(); 
-  BLEDevice peripheral(int index); 
-  int peripheralCount();
-  BLEDevice available();
-
+  virtual BLEDevice central(int index);
+  virtual int centralCount();
+  virtual BLEDevice peripheral(); 
+  virtual BLEDevice peripheral(int index); 
+  virtual int peripheralCount();
+  virtual BLEDevice available();
 
   virtual void setAdvertisingInterval(uint16_t advertisingInterval);
   virtual void setConnectionInterval(uint16_t minimumConnectionInterval, uint16_t maximumConnectionInterval);
diff --git a/src/utility/ATT.h b/src/utility/ATT.h
index eda24a56..a8eb0162 100644
--- a/src/utility/ATT.h
+++ b/src/utility/ATT.h
@@ -67,11 +67,11 @@ class ATTClass {
   virtual bool disconnect();
 
   virtual BLEDevice central();
-  BLEDevice central(int index); 
-  int centralCount();
-  BLEDevice peripheral(); 
-  BLEDevice peripheral(int index); 
-  int peripheralCount();
+  virtual BLEDevice central(int index); 
+  virtual int centralCount();
+  virtual BLEDevice peripheral(); 
+  virtual BLEDevice peripheral(int index); 
+  virtual int peripheralCount();
 
   virtual bool handleNotify(uint16_t handle, const uint8_t* value, int length);
   virtual bool handleInd(uint16_t handle, const uint8_t* value, int length);