diff --git a/test/behavior/bugs/1381.zig b/test/behavior/bugs/1381.zig
index fb46869e99fc62a4d9d273717f8b97637a1e098f..242c8527953f5f09262df1134b6188009fca0678 100644
--- a/test/behavior/bugs/1381.zig
+++ b/test/behavior/bugs/1381.zig
@@ -14,6 +14,8 @@ const A = union(enum) {
 test "union that needs padding bytes inside an array" {
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+
     var as = [_]A{
         A{ .B = B{ .D = 1 } },
         A{ .B = B{ .D = 1 } },
diff --git a/test/behavior/bugs/1741.zig b/test/behavior/bugs/1741.zig
index 63de6e83dc58f251bb03fcfe25a11d2cdc2e8651..0d19eb20c813f0837f6ecc805f491bd64d7ff1f5 100644
--- a/test/behavior/bugs/1741.zig
+++ b/test/behavior/bugs/1741.zig
@@ -5,6 +5,7 @@ test "fixed" {
     if (builtin.zig_backend == .stage2_wasm) 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_x86_64) return error.SkipZigTest; // TODO
 
     const x: f32 align(128) = 12.34;
     try std.testing.expect(@ptrToInt(&x) % 128 == 0);