diff --git a/custom_formats/HDR10 (Missing).yml b/custom_formats/HDR10 (Missing).yml
index 5cd6c38..dffb2cd 100644
--- a/custom_formats/HDR10 (Missing).yml	
+++ b/custom_formats/HDR10 (Missing).yml	
@@ -30,6 +30,11 @@ conditions:
   pattern: SDR
   required: true
   type: release_title
+- name: Not HDR
+  type: release_title
+  required: true
+  negate: true
+  pattern: HDR
 tests:
 - conditionResults:
   - matches: false