Add a missing word

Co-authored-by: Awjin Ahn <[email protected]>
sass · Oct 7, 2020 · 4bc4904 · 4bc4904
1 parent f981227
commit 4bc4904
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/src/ast/css/modifiable/declaration.dart b/lib/src/ast/css/modifiable/declaration.dart
@@ -34,7 +34,7 @@ class ModifiableCssDeclaration extends ModifiableCssNode
             '"--".');
       } else if (value.value is! SassString) {
         throw ArgumentError(
-            'If parsedAsCustomProperty is true, value contain a SassString '
+            'If parsedAsCustomProperty is true, value must contain a SassString '
             '(was `$value` of type ${value.value.runtimeType}).');
       }
     }