diff --git a/schemas/materials/source.schema.yaml b/schemas/materials/source.schema.yaml
index c00a276..79a8190 100644
--- a/schemas/materials/source.schema.yaml
+++ b/schemas/materials/source.schema.yaml
@@ -95,5 +95,4 @@ examples:
           }
       }
 
-    language:
-      Solidity
+    language: Solidity