diff --git a/cobald/parasites/condor_limits/adapter.py b/cobald/parasites/condor_limits/adapter.py
index <HASH>..<HASH> 100644
--- a/cobald/parasites/condor_limits/adapter.py
+++ b/cobald/parasites/condor_limits/adapter.py
@@ -14,7 +14,10 @@ def query_limits(query_command, key_transform):
         except ValueError:
             continue
         else:
-            resource_limits[resource] = float(value)
+            try:
+                resource_limits[resource] = float(value)
+            except ValueError:
+                pass
     return resource_limits
condor: invalid values are ignored during queries