diff --git a/pydantic_numpy/dtype.py b/pydantic_numpy/dtype.py
index 45af0f9..9851494 100644
--- a/pydantic_numpy/dtype.py
+++ b/pydantic_numpy/dtype.py
@@ -26,11 +26,11 @@ def validate(cls, val: Any, field: ModelField):
         return val
 
 
-class dobble(np.float64, _BaseDType):
+class double(np.float64, _BaseDType):
     pass
 
 
-float64 = dobble
+float64 = double
 
 
 class single(np.float32, _BaseDType):