diff --git a/ortools/python/setup.py.in b/ortools/python/setup.py.in
index 8c09924ca0..3adb763337 100644
--- a/ortools/python/setup.py.in
+++ b/ortools/python/setup.py.in
@@ -51,9 +51,9 @@ setup(
     ],
     package_data={
         '@PYTHON_PROJECT@':[
-		    '.libs/*',
-		    $<$<STREQUAL:$<TARGET_PROPERTY:@PROJECT_NAME@,TYPE>,SHARED_LIBRARY>:'../$<TARGET_SONAME_FILE_NAME:@PROJECT_NAME@>'>
-		],
+        '.libs/*',
+        $<$<STREQUAL:$<TARGET_PROPERTY:@PROJECT_NAME@,TYPE>,SHARED_LIBRARY>:'../$<TARGET_SONAME_FILE_NAME:@PROJECT_NAME@>'>
+        ],
         '@PYTHON_PROJECT@.init.python':[
             '$<TARGET_FILE_NAME:init_pybind11>',
             '*.pyi'