diff --git a/src/error.rs b/src/error.rs
index 4ab80bed..e4c22c4f 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -184,8 +184,8 @@ impl ErrorImpl {
 
     fn source(&self) -> Option<&(dyn StdError + 'static)> {
         match self {
-            ErrorImpl::Io(err) => Some(err),
-            ErrorImpl::FromUtf8(err) => Some(err),
+            ErrorImpl::Io(err) => err.source(),
+            ErrorImpl::FromUtf8(err) => err.source(),
             ErrorImpl::Shared(err) => err.source(),
             _ => None,
         }