diff --git a/src/primefactorization.jl b/src/primefactorization.jl
index 30fc0e1..0586070 100644
--- a/src/primefactorization.jl
+++ b/src/primefactorization.jl
@@ -1,4 +1,4 @@
-using Primes.isprime
+using Primes: isprime
 import Base.divgcd
 
 const primetable = [2,3,5]