diff --git a/src/Julia/Problems001-050/Problem020.jl b/src/Julia/Problems001-050/Problem020.jl
index 6b02a92..b9ade14 100644
--- a/src/Julia/Problems001-050/Problem020.jl
+++ b/src/Julia/Problems001-050/Problem020.jl
@@ -18,8 +18,10 @@ function Problem20()
     3 + 6 + 2 + 8 + 8 + 0 + 0 = 27.
 
     Find the sum of the digits in the number 100! =#
-    fact = factorial(big(100))
-    return sum(parse(Int, d) for d in string(fact))
+
+    fact::BigInt = factorial(big(100))
+
+    return sum(parse(Int8, d) for d::Char = string(fact))
 end