diff --git a/aquatic_http_load_test/src/network.rs b/aquatic_http_load_test/src/network.rs
index eee34e4..05a70bd 100644
--- a/aquatic_http_load_test/src/network.rs
+++ b/aquatic_http_load_test/src/network.rs
@@ -113,7 +113,7 @@ impl Connection {
             }
         }
         for chunk in response_bytes.windows(18){
-            if chunk == b"d14:failure_reason" {
+            if chunk == b"d14:failure reason" {
                 state.statistics.responses_failure.fetch_add(1, Ordering::SeqCst);
 
                 return;
diff --git a/aquatic_http_protocol/src/response.rs b/aquatic_http_protocol/src/response.rs
index a77b022..7f1dd16 100644
--- a/aquatic_http_protocol/src/response.rs
+++ b/aquatic_http_protocol/src/response.rs
@@ -145,7 +145,7 @@ impl FailureResponse {
 
         let reason_bytes = self.failure_reason.as_bytes();
 
-        bytes_written += output.write(b"d14:failure_reason")?;
+        bytes_written += output.write(b"d14:failure reason")?;
         bytes_written += output.write(
             itoa::Buffer::new().format(reason_bytes.len()).as_bytes()
         )?;