diff --git a/src/NimBLEService.cpp b/src/NimBLEService.cpp
index 02195ac..8055869 100644
--- a/src/NimBLEService.cpp
+++ b/src/NimBLEService.cpp
@@ -434,4 +434,13 @@ NimBLEServer* NimBLEService::getServer() {
     return NimBLEDevice::getServer();
 }// getServer
 
+
+/**
+ * @brief Checks if the service has been started.
+ * @return True if the service has been started.
+ */
+bool NimBLEService::isStarted() {
+    return m_pSvcDef != nullptr;
+}
+
 #endif /* CONFIG_BT_ENABLED && CONFIG_BT_NIMBLE_ROLE_PERIPHERAL */
diff --git a/src/NimBLEService.h b/src/NimBLEService.h
index 6f33016..73cbd87 100644
--- a/src/NimBLEService.h
+++ b/src/NimBLEService.h
@@ -44,7 +44,7 @@ public:
     uint16_t              getHandle();
     std::string           toString();
     void                  dump();
-    bool                  isStarted() { return m_pSvcDef != nullptr; }
+    bool                  isStarted();
     bool                  start();
 
     NimBLECharacteristic* createCharacteristic(const char* uuid,