diff --git a/pkg/vendored/generate.go b/pkg/vendored/generate.go
index 83f109a4f..38cdc0a29 100644
--- a/pkg/vendored/generate.go
+++ b/pkg/vendored/generate.go
@@ -309,9 +309,13 @@ func vendorOpenTOFU(version string) {
 			transforms: transforms,
 		},
 		{
-			src:        "internal/addrs/checkable.go",
-			dest:       "addrs/checkable.go",
-			transforms: transforms,
+			src:  "internal/addrs/checkable.go",
+			dest: "addrs/checkable.go",
+			transforms: append(transforms, func(s string) string {
+				code := `fmt.Sprintf("unsupported CheckableKind %s", kind)`
+				repl := `fmt.Sprintf("unsupported CheckableKind %v", kind)`
+				return strings.ReplaceAll(s, code, repl)
+			}),
 		},
 		{
 			src:        "internal/addrs/check.go",
diff --git a/pkg/vendored/opentofu/addrs/checkable.go b/pkg/vendored/opentofu/addrs/checkable.go
index 54085ef7d..a24b106fd 100755
--- a/pkg/vendored/opentofu/addrs/checkable.go
+++ b/pkg/vendored/opentofu/addrs/checkable.go
@@ -192,6 +192,6 @@ func ParseCheckableStr(kind CheckableKind, src string) (Checkable, tfdiags.Diagn
 		return InputVariable{Name: name}.Absolute(path), diags
 
 	default:
-		panic(fmt.Sprintf("unsupported CheckableKind %s", kind))
+		panic(fmt.Sprintf("unsupported CheckableKind %v", kind))
 	}
 }