diff --git a/libsepol/include/sepol/policydb/avtab.h b/libsepol/include/sepol/policydb/avtab.h
index 10ecde9a..e4c48576 100644
--- a/libsepol/include/sepol/policydb/avtab.h
+++ b/libsepol/include/sepol/policydb/avtab.h
@@ -112,7 +112,7 @@ extern avtab_datum_t *avtab_search(avtab_t * h, avtab_key_t * k);
 
 extern void avtab_destroy(avtab_t * h);
 
-extern int avtab_map(avtab_t * h,
+extern int avtab_map(const avtab_t * h,
 		     int (*apply) (avtab_key_t * k,
 				   avtab_datum_t * d, void *args), void *args);
 
diff --git a/libsepol/src/avtab.c b/libsepol/src/avtab.c
index 7920b60a..82fec783 100644
--- a/libsepol/src/avtab.c
+++ b/libsepol/src/avtab.c
@@ -330,7 +330,7 @@ void avtab_destroy(avtab_t * h)
 	h->mask = 0;
 }
 
-int avtab_map(avtab_t * h,
+int avtab_map(const avtab_t * h,
 	      int (*apply) (avtab_key_t * k,
 			    avtab_datum_t * d, void *args), void *args)
 {