diff --git a/src/NimBLEClient.cpp b/src/NimBLEClient.cpp
index 7d9a10e..7054f93 100644
--- a/src/NimBLEClient.cpp
+++ b/src/NimBLEClient.cpp
@@ -147,7 +147,7 @@ bool NimBLEClient::connect(bool deleteAttributes, bool asyncConnect, bool exchan
  * If false, the client will use the default MTU size and the application will need to call exchangeMTU() later.
  * @return true on success.
  */
-bool NimBLEClient::connect(NimBLEAdvertisedDevice* device, bool deleteAttributes, bool asyncConnect, bool exchangeMTU) {
+bool NimBLEClient::connect(const NimBLEAdvertisedDevice* device, bool deleteAttributes, bool asyncConnect, bool exchangeMTU) {
     NimBLEAddress address(device->getAddress());
     return connect(address, deleteAttributes, asyncConnect, exchangeMTU);
 }
diff --git a/src/NimBLEClient.h b/src/NimBLEClient.h
index d5c3265..430e3c6 100644
--- a/src/NimBLEClient.h
+++ b/src/NimBLEClient.h
@@ -44,10 +44,10 @@ struct NimBLETaskData;
  */
 class NimBLEClient {
   public:
-    bool connect(NimBLEAdvertisedDevice* device,
-                 bool                    deleteAttributes = true,
-                 bool                    asyncConnect     = false,
-                 bool                    exchangeMTU      = true);
+    bool connect(const NimBLEAdvertisedDevice* device,
+                 bool                          deleteAttributes = true,
+                 bool                          asyncConnect     = false,
+                 bool                          exchangeMTU      = true);
     bool connect(const NimBLEAddress& address, bool deleteAttributes = true, bool asyncConnect = false, bool exchangeMTU = true);
     bool           connect(bool deleteAttributes = true, bool asyncConnect = false, bool exchangeMTU = true);
     bool           disconnect(uint8_t reason = BLE_ERR_REM_USER_CONN_TERM);