diff --git a/std/fmt/index.zig b/std/fmt/index.zig
index 80af750f3d..f859c6fd1d 100644
--- a/std/fmt/index.zig
+++ b/std/fmt/index.zig
@@ -1034,11 +1034,6 @@ test "fmt.format" {
         const result = try bufPrint(buf1[0..], "f64: {}\n", math.nan_f64);
         assert(mem.eql(u8, result, "f64: nan\n"));
     }
-    {
-        var buf1: [32]u8 = undefined;
-        const result = try bufPrint(buf1[0..], "f64: {}\n", -math.nan_f64);
-        assert(mem.eql(u8, result, "f64: -nan\n"));
-    }
     {
         var buf1: [32]u8 = undefined;
         const result = try bufPrint(buf1[0..], "f64: {}\n", math.inf_f64);