diff --git a/src/veles/device/generic.py b/src/veles/device/generic.py
index 1097c6c..2d2793e 100644
--- a/src/veles/device/generic.py
+++ b/src/veles/device/generic.py
@@ -33,7 +33,7 @@ class Device(ABC):
     """
 
     @abstractmethod
-    def get_data(self) -> Dict[str:Any]:
+    def get_data(self) -> Dict[str, Any]:
         """
         Get dict with all data from sensor;
         used for logging purposes