diff --git a/python38.spec b/python38.spec
index 7e473fd..f70315b 100644
--- a/python38.spec
+++ b/python38.spec
@@ -201,7 +201,7 @@ BuildRequires:  mpdecimal-devel
 %endif
 %if %{with doc}
 %if 0%{?sle_version} && 0%{?sle_version} <= 150300
-BuildRequires:  %{python_pkg_name}-Sphinx
+BuildRequires:  python3-Sphinx
 %else
 BuildRequires:  %{python_pkg_name}-Sphinx >= 3.2.0
 BuildRequires:  %{python_pkg_name}-python-docs-theme