diff --git a/test/behavior/error.zig b/test/behavior/error.zig
index d483afc3001fbb72981d800cd96c6ffd40d53d08..dc29c9bc5bee549b78a14ff7f002c698557d56ff 100644
--- a/test/behavior/error.zig
+++ b/test/behavior/error.zig
@@ -223,6 +223,7 @@ fn testErrorSetType() !void {
 test "explicit error set cast" {
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
+    if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
 
     try testExplicitErrorSetCast(Set1.A);
     comptime try testExplicitErrorSetCast(Set1.A);