diff --git a/src/s3/lib.rs b/src/s3/lib.rs
index f4a43af6035..aa7d82438cf 100644
--- a/src/s3/lib.rs
+++ b/src/s3/lib.rs
@@ -99,7 +99,8 @@ impl Bucket {
     pub fn host(&self) -> String {
         format!("{}.s3{}.amazonaws.com", self.name,
                 match self.region {
-                    Some(ref r) => format!("-{}", r),
+                    Some(ref r) if r != "" => format!("-{}", r),
+                    Some(_) => String::new(),
                     None => String::new(),
                 })
     }