diff --git a/lib/compiler_rt/aulldiv.zig b/lib/compiler_rt/aulldiv.zig
index 6d822b7b86fa292693ccf8ea1d728a40ce3e50d2..8a7baaad3e7cd67c60f23ab7ac8fce84ce1291a3 100644
--- a/lib/compiler_rt/aulldiv.zig
+++ b/lib/compiler_rt/aulldiv.zig
@@ -8,7 +8,7 @@ const common = @import("common.zig");
 pub const panic = common.panic;
 
 comptime {
-    if (arch == .x86 and os == .windows and (abi == .msvc or abi == .itanium) and builtin.zig_backend != .stage2_c) {
+    if (arch == .x86 and os == .windows and (abi == .msvc or abi == .itanium) and !builtin.link_libc) {
         // Don't let LLVM apply the stdcall name mangling on those MSVC builtins
         @export(&_alldiv, .{ .name = "\x01__alldiv", .linkage = common.linkage, .visibility = common.visibility });
         @export(&_aulldiv, .{ .name = "\x01__aulldiv", .linkage = common.linkage, .visibility = common.visibility });
diff --git a/lib/compiler_rt/aullrem.zig b/lib/compiler_rt/aullrem.zig
index 5c4d0588f786783f6438d3ef9b5ba8527a4d05da..182ad4e1de236d33713f0f9ced446d55ebcee890 100644
--- a/lib/compiler_rt/aullrem.zig
+++ b/lib/compiler_rt/aullrem.zig
@@ -8,7 +8,7 @@ const common = @import("common.zig");
 pub const panic = common.panic;
 
 comptime {
-    if (arch == .x86 and os == .windows and (abi == .msvc or abi == .itanium) and builtin.zig_backend != .stage2_c) {
+    if (arch == .x86 and os == .windows and (abi == .msvc or abi == .itanium) and !builtin.link_libc) {
         // Don't let LLVM apply the stdcall name mangling on those MSVC builtins
         @export(&_allrem, .{ .name = "\x01__allrem", .linkage = common.linkage, .visibility = common.visibility });
         @export(&_aullrem, .{ .name = "\x01__aullrem", .linkage = common.linkage, .visibility = common.visibility });