diff --git a/src/hb-set.cc b/src/hb-set.cc
index 37866c40a..93f983aeb 100644
--- a/src/hb-set.cc
+++ b/src/hb-set.cc
@@ -188,7 +188,7 @@ hb_set_symmetric_difference (hb_set_t       *set,
 }
 
 unsigned int
-hb_set_population (const hb_set_t *set)
+hb_set_get_population (const hb_set_t *set)
 {
   return set->get_population ();
 }
diff --git a/src/hb-set.h b/src/hb-set.h
index 06f358272..ec3d119e1 100644
--- a/src/hb-set.h
+++ b/src/hb-set.h
@@ -122,7 +122,7 @@ hb_set_symmetric_difference (hb_set_t       *set,
 			     const hb_set_t *other);
 
 unsigned int
-hb_set_population (const hb_set_t *set);
+hb_set_get_population (const hb_set_t *set);
 
 /* Returns -1 if set empty. */
 hb_codepoint_t