diff --git a/Project.toml b/Project.toml
index 525242f..c5aa179 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,6 +1,6 @@
 name = "Primes"
 uuid = "27ebfcd6-29c5-5fa9-bf4b-fb8fc14df3ae"
-version = "0.5.4"
+version = "0.5.5"
 
 [deps]
 IntegerMathUtils = "18e54dd8-cb9d-406c-a71d-865a43cbb235"
diff --git a/src/Primes.jl b/src/Primes.jl
index 06e5ffd..6e5f781 100644
--- a/src/Primes.jl
+++ b/src/Primes.jl
@@ -346,7 +346,7 @@ function iterate(f::FactorIterator{T}, state=(f.n, T(3))) where T
         n == 0 && return (T(n), 1), (T(1), p)
     end
     tz = trailing_zeros(n)
-    tz>0 && return (T(2), tz), (n >> tz, p)
+    tz>0 && return (T(2), Int(tz)), (n >> tz, p)
     if n <= N_SMALL_FACTORS
         p = _min_factor(n)
         num_p = 1