diff --git a/README.rst b/README.rst
index c72e0e3..2132b34 100644
--- a/README.rst
+++ b/README.rst
@@ -163,6 +163,7 @@ Changelog
 
   - Return (big) decimal types as long value if scale is zero (thanks
     to @ministat)
+  - Fix `DECIMAL` and `NUMERIC` type conversion for Jython
 
 - 1.2.1 - 2020-05-27
 
diff --git a/jaydebeapi/__init__.py b/jaydebeapi/__init__.py
index 484a1d1..b66c444 100644
--- a/jaydebeapi/__init__.py
+++ b/jaydebeapi/__init__.py
@@ -663,19 +663,19 @@ def _java_to_py(java_method):
         return getattr(java_val, java_method)()
     return to_py
 
-def _java_to_py_bigdecimal(java_method):
+def _java_to_py_bigdecimal():
     def to_py(rs, col):
         java_val = rs.getObject(col)
         if java_val is None:
             return
         if hasattr(java_val, 'scale'):
-            scale = getattr(java_val, 'scale')()
+            scale = java_val.scale()
             if scale == 0:
-                return getattr(java_val, 'longValue')()
+                return java_val.longValue()
             else:
-                return getattr(java_val, java_method)()
+                return java_val.doubleValue()
         else:
-            return getattr(java_val, java_method)()
+            return float(java_val)
     return to_py
 
 _to_double = _java_to_py('doubleValue')
@@ -684,7 +684,7 @@ _to_int = _java_to_py('intValue')
 
 _to_boolean = _java_to_py('booleanValue')
 
-_to_decimal = _java_to_py_bigdecimal('doubleValue')
+_to_decimal = _java_to_py_bigdecimal()
 
 def _init_types(types_map):
     global _jdbc_name_to_const