diff --git a/test/behavior/int128.zig b/test/behavior/int128.zig
index f57999511c..08c6dd0e4d 100644
--- a/test/behavior/int128.zig
+++ b/test/behavior/int128.zig
@@ -46,6 +46,7 @@ test "int128" {
     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_arm) return error.SkipZigTest; // TODO
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
 
     var buff: i128 = -1;
     try expect(buff < 0 and (buff + 1) == 0);