diff --git a/openadapt_flow/adapters/capture.py b/openadapt_flow/adapters/capture.py
index 04d5517d..4c8ff25f 100644
--- a/openadapt_flow/adapters/capture.py
+++ b/openadapt_flow/adapters/capture.py
@@ -246,8 +246,8 @@ def _window_capture_meta(session: "CaptureSession") -> Optional[dict[str, Any]]:
         if fallback is not None:
             if not isinstance(fallback, dict):
                 raise ValueError(
-                    "capture session config declares malformed capture_window "
-                    "metadata; expected an object or null"
+                    "capture session config declares malformed window-capture "
+                    "metadata; expected capture_window to be an object or null"
                 )
             return fallback
     return None