diff --git a/performance/Cargo.toml b/performance/Cargo.toml
index 18997fa..2c25885 100644
--- a/performance/Cargo.toml
+++ b/performance/Cargo.toml
@@ -3,7 +3,7 @@ authors = ["ZeroTier, Inc. <contact@zerotier.com>", "Adam Ierymenko <adam.ieryme
 edition = "2021"
 license = "MPL-2.0"
 name = "zssp"
-version = "0.3.0"
+version = "0.3.1"
 
 [lib]
 name = "zssp"
diff --git a/performance/src/result.rs b/performance/src/result.rs
index f138f10..f65387b 100644
--- a/performance/src/result.rs
+++ b/performance/src/result.rs
@@ -321,14 +321,16 @@ where
     Session<C>: fmt::Debug,
 {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        f.debug_struct("ByzantineFault")
-            .field("session", &self.session)
-            .field("caused_expiration", &self.caused_expiration)
+        let mut a = f.debug_struct("ByzantineFault");
+        a.field("session", &self.session)
             .field("error", &self.error)
             .field("unnatural", &self.unnatural)
-            .field("file", &self.file)
-            .field("line", &self.line)
-            .finish()
+            .field("caused_expiration", &self.caused_expiration);
+        #[cfg(feature = "debug")]
+        {
+            a.field("file", &self.file).field("line", &self.line);
+        }
+        a.finish()
     }
 }
 impl<C: CryptoLayer> fmt::Display for ByzantineFault<C> {