diff --git a/compiler/builtins/roc/Str.roc b/compiler/builtins/roc/Str.roc
index 02f1263924..fae59869c1 100644
--- a/compiler/builtins/roc/Str.roc
+++ b/compiler/builtins/roc/Str.roc
@@ -34,7 +34,7 @@ interface Str
             toU8,
             toI8,
         ]
-    imports [ ]
+    imports [ Bool.{ Bool }, Result.{ Result } ]