diff --git a/fissa/core.py b/fissa/core.py
index 8983a837..528aed3d 100644
--- a/fissa/core.py
+++ b/fissa/core.py
@@ -1062,8 +1062,11 @@ def _unpack_scalar(x):
                     )
 
             # Wipe the values currently held before setting new values
-            if not skip_clear and clearif in cache.files:
-                clearfn()
+            if not skip_clear:
+                for field in clearif:
+                    if field in cache.files:
+                        clearfn()
+                        break
             # All the validators were valid, so we are okay to load the fields
             any_field_loaded = False
             for field in fields: