diff --git a/source_strings.yaml b/source_strings.yaml
index 3bfcd406..bcb4a34c 100644
--- a/source_strings.yaml
+++ b/source_strings.yaml
@@ -3116,6 +3116,10 @@ en:
         # layer field placeholder
         placeholder: '0'
         terms: '[translate with synonyms or related terms for ''Layer'', separated by commas]'
+      layer_1:
+        # layer=*
+        # layer_1 field placeholder
+        placeholder: '0'
       leaf_cycle:
         # leaf_cycle=*
         label: Leaf Cycle