diff --git a/Modules/grpmodule.c b/Modules/grpmodule.c
index 0dcef06..ca3a358 100644
--- a/Modules/grpmodule.c
+++ b/Modules/grpmodule.c
@@ -10,8 +10,8 @@
 static PyStructSequence_Field struct_group_type_fields[] = {
    {"gr_name", "group name"},
    {"gr_passwd", "password"},
-   {"gr_gid", "group id"}, 
-   {"gr_mem", "group memebers"}, 
+   {"gr_gid", "group id"},
+   {"gr_mem", "group memebers"},
    {0}
 };
 
@@ -67,10 +67,10 @@
     Py_INCREF(Py_None);
 #else
     if (p->gr_passwd)
-	    SET(setIndex++, FSDECODE(p->gr_passwd));
+            SET(setIndex++, FSDECODE(p->gr_passwd));
     else {
-	    SET(setIndex++, Py_None);
-	    Py_INCREF(Py_None);
+            SET(setIndex++, Py_None);
+            Py_INCREF(Py_None);
     }
 #endif
     SET(setIndex++, PyLong_FromLong((long) p->gr_gid));
@@ -94,12 +94,12 @@
 
     py_int_id = PyNumber_Long(pyo_id);
     if (!py_int_id)
-	    return NULL;
+            return NULL;
     gid = PyLong_AS_LONG(py_int_id);
     Py_DECREF(py_int_id);
 
     if ((p = getgrgid(gid)) == NULL) {
-	PyErr_Format(PyExc_KeyError, "getgrgid(): gid not found: %d", gid);
+        PyErr_Format(PyExc_KeyError, "getgrgid(): gid not found: %d", gid);
         return NULL;
     }
     return mkgrent(p);
@@ -119,9 +119,9 @@
         return NULL;
     if (PyBytes_AsStringAndSize(bytes, &name, NULL) == -1)
         goto out;
-    
+
     if ((p = getgrnam(name)) == NULL) {
-	PyErr_Format(PyExc_KeyError, "getgrnam(): name not found: %s", name);
+        PyErr_Format(PyExc_KeyError, "getgrnam(): name not found: %s", name);
         goto out;
     }
     retval = mkgrent(p);
@@ -154,18 +154,18 @@
 }
 
 static PyMethodDef grp_methods[] = {
-    {"getgrgid",	grp_getgrgid,	METH_O,
+    {"getgrgid",        grp_getgrgid,   METH_O,
      "getgrgid(id) -> tuple\n\
 Return the group database entry for the given numeric group ID.  If\n\
 id is not valid, raise KeyError."},
-    {"getgrnam",	grp_getgrnam,	METH_VARARGS,
+    {"getgrnam",        grp_getgrnam,   METH_VARARGS,
      "getgrnam(name) -> tuple\n\
 Return the group database entry for the given group name.  If\n\
 name is not valid, raise KeyError."},
-    {"getgrall",	grp_getgrall,	METH_NOARGS,
+    {"getgrall",        grp_getgrall,   METH_NOARGS,
      "getgrall() -> list of tuples\n\
 Return a list of all available group entries, in arbitrary order."},
-    {NULL,		NULL}		/* sentinel */
+    {NULL,              NULL}           /* sentinel */
 };
 
 PyDoc_STRVAR(grp__doc__,
@@ -187,15 +187,15 @@
 
 
 static struct PyModuleDef grpmodule = {
-	PyModuleDef_HEAD_INIT,
-	"grp",
-	grp__doc__,
-	-1,
-	grp_methods,
-	NULL,
-	NULL,
-	NULL,
-	NULL
+        PyModuleDef_HEAD_INIT,
+        "grp",
+        grp__doc__,
+        -1,
+        grp_methods,
+        NULL,
+        NULL,
+        NULL,
+        NULL
 };
 
 PyMODINIT_FUNC
@@ -207,7 +207,7 @@
         return NULL;
     d = PyModule_GetDict(m);
     if (!initialized)
-	    PyStructSequence_InitType(&StructGrpType, &struct_group_type_desc);
+            PyStructSequence_InitType(&StructGrpType, &struct_group_type_desc);
     PyDict_SetItemString(d, "struct_group", (PyObject *) &StructGrpType);
     initialized = 1;
     return m;