diff --git a/python/libsharp/libsharp.pyx b/python/libsharp/libsharp.pyx
index 503dcca..0bc2c9a 100644
--- a/python/libsharp/libsharp.pyx
+++ b/python/libsharp/libsharp.pyx
@@ -247,7 +247,7 @@ cdef class alm_info:
             sharp_destroy_alm_info(self.ainfo)
         self.ainfo = NULL
 
-    def almxfl(self, np.ndarray[double, ndim=3, mode='c'] alm, np.ndarray[double, ndim=2, mode='c'] fl, int rank):
+    def almxfl(self, np.ndarray[double, ndim=3, mode='c'] alm, np.ndarray[double, ndim=2, mode='c'] fl):
         """Multiply Alm by a Ell based array