diff --git a/src/moments/mod.rs b/src/moments/mod.rs
index bddfaf2..67d1829 100644
--- a/src/moments/mod.rs
+++ b/src/moments/mod.rs
@@ -6,6 +6,7 @@ use conv::ApproxFrom;
 use super::{Estimate, Merge};
 
 include!("mean.rs");
+include!("variance0.rs");
 include!("variance1.rs");
 include!("skewness.rs");
 include!("kurtosis.rs");