diff --git a/modules/workflow_serial.py b/modules/workflow_serial.py
index 1ec2480..090140e 100644
--- a/modules/workflow_serial.py
+++ b/modules/workflow_serial.py
@@ -180,7 +180,10 @@ def _serial_redfish_request(ser: SerialPort, password: str, method: str,
     # curl response body appears there), then find the LAST newline-prefixed
     # '{' — because the JSON response always starts on its own line, while
     # the echoed '{http_code}' is embedded mid-line in the curl command echo.
-    http_code_pos = raw.find("HTTP_CODE:")
+    # Use rfind (not find) — the -w argument in the echoed curl command also
+    # contains the literal text "HTTP_CODE:", so find() would land there instead
+    # of at the actual HTTP_CODE:200 output that curl appends at the end.
+    http_code_pos = raw.rfind("HTTP_CODE:")
     search_area   = raw[:http_code_pos].rstrip() if http_code_pos >= 0 else raw
 
     data: dict = {}