diff --git a/PCC/PCC/PCC.py b/PCC/PCC/PCC.py
index 6156fd5c1181734f494f9111bde442eb1c1d9f2f..f6b20dc021687d6249c3069eb5688a45a5e704c8 100644
--- a/PCC/PCC/PCC.py
+++ b/PCC/PCC/PCC.py
@@ -69,7 +69,7 @@ class PCC(Device):
     # Device Properties
     # -----------------
     OPC_Server_Name = device_property(
-        dtype=numpy.str_,
+        dtype=numpy.str,
         mandatory=True
     )
 
@@ -79,7 +79,7 @@ class PCC(Device):
     )
 
     OPC_Time_Out = device_property(
-        dtype=numpy.uint64,
+        dtype=numpy.float_,
         mandatory=True
     )
 
@@ -178,7 +178,7 @@ class PCC(Device):
     )
 
     RCU_version_R = attribute(
-        dtype=(numpy.str_,),
+        dtype=(numpy.str,),
         max_dim_x=32,
     )
 
@@ -213,7 +213,6 @@ class PCC(Device):
         dtype=numpy.float_,
     )
 
-
     # ---------------
     # General methods
     # ---------------