diff --git a/features/FEATURE_BLE/ble/SecurityManager.h b/features/FEATURE_BLE/ble/SecurityManager.h
index 011c33dbd9..64836613a5 100644
--- a/features/FEATURE_BLE/ble/SecurityManager.h
+++ b/features/FEATURE_BLE/ble/SecurityManager.h
@@ -644,6 +644,7 @@ public:
      */
     ble_error_t setKeypressNotification(bool enabled = true);
 
+#if BLE_FEATURE_SIGNING
     /**
      * Request generation and exchange of signing keys so that packet signing can be utilised
      * on this connection.
@@ -655,6 +656,7 @@ public:
      * @return BLE_ERROR_NONE or appropriate error code indicating the failure reason.
      */
     ble_error_t enableSigning(ble::connection_handle_t connectionHandle, bool enabled = true);
+#endif // BLE_FEATURE_SIGNING
 
     /**
      * Give a hint to the stack that the master/slave role might change in the future.
diff --git a/features/FEATURE_BLE/source/SecurityManager.tpp b/features/FEATURE_BLE/source/SecurityManager.tpp
index 4ecf297ddf..6509a4c2c8 100644
--- a/features/FEATURE_BLE/source/SecurityManager.tpp
+++ b/features/FEATURE_BLE/source/SecurityManager.tpp
@@ -137,6 +137,7 @@ ble_error_t SecurityManager<Impl>::setKeypressNotification(bool enabled) {
     return impl()->setKeypressNotification_(enabled);
 }
 
+#if BLE_FEATURE_SIGNING
 template <class Impl>
 ble_error_t SecurityManager<Impl>::enableSigning(
     ble::connection_handle_t connectionHandle,
@@ -144,6 +145,7 @@ ble_error_t SecurityManager<Impl>::enableSigning(
 ) {
     return impl()->enableSigning_(connectionHandle, enabled);
 }
+#endif // BLE_FEATURE_SIGNING
 
 template <class Impl>
 ble_error_t SecurityManager<Impl>::setHintFutureRoleReversal(bool enable) {