diff --git a/compiler/builtins/bitcode/src/utils.zig b/compiler/builtins/bitcode/src/utils.zig
index c7887509be..772b8ce41e 100644
--- a/compiler/builtins/bitcode/src/utils.zig
+++ b/compiler/builtins/bitcode/src/utils.zig
@@ -25,9 +25,6 @@ comptime {
         @export(testing_roc_realloc, .{ .name = "roc_realloc", .linkage = .Strong });
         @export(testing_roc_dealloc, .{ .name = "roc_dealloc", .linkage = .Strong });
         @export(testing_roc_panic, .{ .name = "roc_panic", .linkage = .Strong });
-        @export(testing_roc_expect_failed, .{ .name = "roc_expect_failed", .linkage = .Strong });
-    } else {
-        @export(expect_failed, .{ .name = "roc_expect_failed", .linkage = .Strong });
     }
 }
 
@@ -48,14 +45,9 @@ fn testing_roc_dealloc(c_ptr: *c_void, _: u32) callconv(.C) void {
     std.testing.allocator.destroy(ptr);
 }
 
-fn testing_roc_expect_failed() callconv(.C) void {
-    const stderr = std.io.getStdErr().writer();
-    stderr.print("Expect failed inside test\n", .{}) catch unreachable;
-}
-
-fn expect_failed() callconv(.C) void {
-    const stderr = std.io.getStdErr().writer();
-    stderr.print("Expect failed outside test\n", .{}) catch unreachable;
+export fn roc_expect_failed(func_ptr: usize) callconv(.C) void {
+    const func = @intToPtr(fn () void, func_ptr);
+    func();
 }
 
 fn testing_roc_panic(c_ptr: *c_void, tag_id: u32) callconv(.C) void {
diff --git a/compiler/gen_llvm/src/llvm/build.rs b/compiler/gen_llvm/src/llvm/build.rs
index 4e873c5ac9..c31decb014 100644
--- a/compiler/gen_llvm/src/llvm/build.rs
+++ b/compiler/gen_llvm/src/llvm/build.rs
@@ -5175,7 +5175,11 @@ fn run_low_level<'a, 'ctx, 'env>(
 
             bd.position_at_end(throw_block);
 
-            call_void_bitcode_fn(env, &[], bitcode::EXPECT_FAILED);
+            call_void_bitcode_fn(
+                env,
+                &[env.ptr_int().const_int(0 as u64, false).into()],
+                bitcode::EXPECT_FAILED,
+            );
 
             bd.build_unconditional_branch(then_block);
             bd.position_at_end(then_block);