diff --git a/lib/compiler/test_runner.zig b/lib/compiler/test_runner.zig
index 2468c12645..3d2187748e 100644
--- a/lib/compiler/test_runner.zig
+++ b/lib/compiler/test_runner.zig
@@ -345,7 +345,7 @@ const FuzzerSlice = extern struct {
 
 var is_fuzz_test: bool = undefined;
 
-extern fn fuzzer_start() void;
+extern fn fuzzer_start(testOne: *const fn ([*]const u8, usize) callconv(.C) void) void;
 extern fn fuzzer_init(cache_dir: FuzzerSlice) void;
 extern fn fuzzer_coverage_id() u64;
 
@@ -394,8 +394,7 @@ pub fn fuzz(
         }
     };
     if (builtin.fuzz) {
-        @export(&global.fuzzer_one, .{ .name = "fuzzer_one" });
-        fuzzer_start();
+        fuzzer_start(&global.fuzzer_one);
         return;
     }
 
diff --git a/lib/fuzzer.zig b/lib/fuzzer.zig
index 2aa9744275..6cc8f9cc28 100644
--- a/lib/fuzzer.zig
+++ b/lib/fuzzer.zig
@@ -423,9 +423,10 @@ export fn fuzzer_coverage_id() u64 {
     return fuzzer.coverage_id;
 }
 
-extern fn fuzzer_one(input_ptr: [*]const u8, input_len: usize) callconv(.C) void;
+var fuzzer_one: *const fn (input_ptr: [*]const u8, input_len: usize) callconv(.C) void = undefined;
 
-export fn fuzzer_start() void {
+export fn fuzzer_start(testOne: @TypeOf(fuzzer_one)) void {
+    fuzzer_one = testOne;
     fuzzer.start() catch |err| switch (err) {
         error.OutOfMemory => fatal("out of memory", .{}),
     };