diff --git a/setools/policyrep/boolcond.pxi b/setools/policyrep/boolcond.pxi
index 185d6f3..9dcb697 100644
--- a/setools/policyrep/boolcond.pxi
+++ b/setools/policyrep/boolcond.pxi
@@ -31,7 +31,7 @@ cdef class Boolean(PolicySymbol):
 
     cdef:
         uintptr_t key
-        str name
+        readonly str name
         readonly object state
 
     @staticmethod
diff --git a/setools/policyrep/objclass.pxi b/setools/policyrep/objclass.pxi
index dced825..23ee9d0 100644
--- a/setools/policyrep/objclass.pxi
+++ b/setools/policyrep/objclass.pxi
@@ -31,7 +31,7 @@ cdef class Common(PolicySymbol):
 
     cdef:
         uintptr_t key
-        str name
+        readonly str name
         readonly dict _perm_table
 
     @staticmethod
@@ -96,7 +96,7 @@ cdef class ObjClass(PolicySymbol):
     cdef:
         sepol.class_datum_t *handle
         uintptr_t key
-        str name
+        readonly str name
         Common _common
         readonly dict _perm_table
         list _defaults
diff --git a/setools/policyrep/role.pxi b/setools/policyrep/role.pxi
index 122c3c7..81a249b 100644
--- a/setools/policyrep/role.pxi
+++ b/setools/policyrep/role.pxi
@@ -25,7 +25,7 @@ cdef class Role(PolicySymbol):
 
     cdef:
         uintptr_t key
-        str name
+        readonly str name
         frozenset _types
 
     @staticmethod