diff --git a/gnu/packages/tree-sitter.scm b/gnu/packages/tree-sitter.scm
index 9df8b7b3df1..c3033aa2827 100644
--- a/gnu/packages/tree-sitter.scm
+++ b/gnu/packages/tree-sitter.scm
@@ -254,7 +254,9 @@ which will be used as a snippet in origin."
                  (get-cleanup-snippet grammar-directories))))
       (build-system tree-sitter-build-system)
       (arguments (list #:grammar-directories grammar-directories))
-      (inputs inputs)
+      (inputs (if (promise? inputs)
+                  (force inputs)
+                  inputs))
       (synopsis synopsis)
       (description description)
       (license license))))