diff --git a/freerelay/data_plane/profiler/workload.py b/freerelay/data_plane/profiler/workload.py
index 3aedcec..314df5e 100644
--- a/freerelay/data_plane/profiler/workload.py
+++ b/freerelay/data_plane/profiler/workload.py
@@ -134,7 +134,7 @@ def profile(
                 value, confidence = classifier(request, headers)
                 values[axis_name] = value
                 axis_confidences[axis_name] = confidence
-            except Exception:
+            except (AttributeError, TypeError, ValueError, KeyError):
                 logger.exception("Axis classifier %s failed", axis_name)
                 values[axis_name] = "unknown"
                 axis_confidences[axis_name] = 0.0