diff --git a/src/sage/combinat/posets/hasse_cython_flint.pyx b/src/sage/combinat/posets/hasse_cython_flint.pyx
index 039aa717208..28f3f026430 100644
--- a/src/sage/combinat/posets/hasse_cython_flint.pyx
+++ b/src/sage/combinat/posets/hasse_cython_flint.pyx
@@ -25,7 +25,7 @@ from sage.libs.flint.fmpz_poly_sage cimport Fmpz_poly
 
 cpdef Fmpz_poly chain_poly(list positions):
     r"""
-    Compute the chain polynomial of a poset.
+    Return the chain polynomial of a poset.
 
     INPUT: