diff --git a/python/cudf/cudf/core/series.py b/python/cudf/cudf/core/series.py
index d6b9e7d5835..a664c4fb182 100644
--- a/python/cudf/cudf/core/series.py
+++ b/python/cudf/cudf/core/series.py
@@ -4775,6 +4775,11 @@ def cumprod(self, axis=0, skipna=True, *args, **kwargs):
         if axis not in (None, 0):
             raise NotImplementedError("axis parameter is not implemented yet")
 
+        if is_decimal_dtype(self.dtype):
+            raise NotImplementedError(
+                "cumprod does not currently support decimal types"
+            )
+
         skipna = True if skipna is None else skipna
 
         if skipna:
@@ -4787,11 +4792,6 @@ def cumprod(self, axis=0, skipna=True, *args, **kwargs):
                 )
                 result_col[first_index:] = None
 
-        if is_decimal_dtype(result_col.dtype):
-            raise NotImplementedError(
-                "cumprod does not currently support decimal types"
-            )
-
         # pandas always returns int64 dtype if original dtype is int or `bool`
         if np.issubdtype(result_col.dtype, np.integer) or np.issubdtype(
             result_col.dtype, np.bool_