diff --git a/trusty/gatekeeper/fuzz/Android.bp b/trusty/gatekeeper/fuzz/Android.bp
index 6ff68b6..d084cb6 100644
--- a/trusty/gatekeeper/fuzz/Android.bp
+++ b/trusty/gatekeeper/fuzz/Android.bp
@@ -19,7 +19,12 @@
 cc_fuzz {
     name: "trusty_gatekeeper_fuzzer",
     defaults: ["trusty_fuzzer_defaults"],
-    srcs: ["fuzz.cpp"],
+    srcs: [":trusty_tipc_fuzzer"],
+    cflags: [
+        "-DTRUSTY_APP_PORT=\"com.android.trusty.gatekeeper\"",
+        "-DTRUSTY_APP_UUID=\"38ba0cdc-df0e-11e4-9869-233fb6ae4795\"",
+        "-DTRUSTY_APP_FILENAME=\"gatekeeper.syms.elf\"",
+    ],
 
     // The initial corpus for this fuzzer was derived by dumping messages from
     // the `secure_env` emulator interface for cuttlefish while enrolling a new
diff --git a/trusty/gatekeeper/fuzz/fuzz.cpp b/trusty/gatekeeper/fuzz/fuzz.cpp
deleted file mode 100644
index 7bfd7d1..0000000
--- a/trusty/gatekeeper/fuzz/fuzz.cpp
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * Copyright (C) 2020 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <stdlib.h>
-#include <trusty/coverage/coverage.h>
-#include <trusty/fuzz/counters.h>
-#include <trusty/fuzz/utils.h>
-#include <unistd.h>
-#include <iostream>
-
-using android::trusty::coverage::CoverageRecord;
-using android::trusty::fuzz::ExtraCounters;
-using android::trusty::fuzz::TrustyApp;
-
-#define TIPC_DEV "/dev/trusty-ipc-dev0"
-#define GATEKEEPER_PORT "com.android.trusty.gatekeeper"
-#define GATEKEEPER_MODULE_NAME "gatekeeper.syms.elf"
-
-/* Gatekeeper TA's UUID is 38ba0cdc-df0e-11e4-9869-233fb6ae4795 */
-static struct uuid gatekeeper_uuid = {
-        0x38ba0cdc,
-        0xdf0e,
-        0x11e4,
-        {0x98, 0x69, 0x23, 0x3f, 0xb6, 0xae, 0x47, 0x95},
-};
-
-static CoverageRecord record(TIPC_DEV, &gatekeeper_uuid, GATEKEEPER_MODULE_NAME);
-
-extern "C" int LLVMFuzzerInitialize(int* /* argc */, char*** /* argv */) {
-    auto ret = record.Open();
-    if (!ret.ok()) {
-        std::cerr << ret.error() << std::endl;
-        exit(-1);
-    }
-    return 0;
-}
-
-extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
-    static uint8_t buf[TIPC_MAX_MSG_SIZE];
-
-    ExtraCounters counters(&record);
-    counters.Reset();
-
-    android::trusty::fuzz::TrustyApp ta(TIPC_DEV, GATEKEEPER_PORT);
-    auto ret = ta.Connect();
-    if (!ret.ok()) {
-        android::trusty::fuzz::Abort();
-    }
-
-    /* Send message to test server */
-    ret = ta.Write(data, size);
-    if (!ret.ok()) {
-        return -1;
-    }
-
-    /* Read message from test server */
-    ret = ta.Read(&buf, sizeof(buf));
-    if (!ret.ok()) {
-        return -1;
-    }
-
-    return 0;
-}
diff --git a/trusty/keymaster/fuzz/Android.bp b/trusty/keymaster/fuzz/Android.bp
index 48c4e3a..8d7ee00 100644
--- a/trusty/keymaster/fuzz/Android.bp
+++ b/trusty/keymaster/fuzz/Android.bp
@@ -19,7 +19,12 @@
 cc_fuzz {
     name: "trusty_keymaster_fuzzer",
     defaults: ["trusty_fuzzer_defaults"],
-    srcs: ["fuzz.cpp"],
+    srcs: [":trusty_tipc_fuzzer"],
+    cflags: [
+        "-DTRUSTY_APP_PORT=\"com.android.trusty.keymaster\"",
+        "-DTRUSTY_APP_UUID=\"5f902ace-5e5c-4cd8-ae54-87b88c22ddaf\"",
+        "-DTRUSTY_APP_FILENAME=\"keymaster.syms.elf\"",
+    ],
 
     // The initial corpus for this fuzzer was derived by dumping messages from
     // the `secure_env` emulator interface for cuttlefish while running the
diff --git a/trusty/keymaster/fuzz/fuzz.cpp b/trusty/keymaster/fuzz/fuzz.cpp
deleted file mode 100644
index 4ac97bb..0000000
--- a/trusty/keymaster/fuzz/fuzz.cpp
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * Copyright (C) 2020 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <stdlib.h>
-#include <trusty/coverage/coverage.h>
-#include <trusty/fuzz/counters.h>
-#include <trusty/fuzz/utils.h>
-#include <unistd.h>
-#include <iostream>
-
-using android::trusty::coverage::CoverageRecord;
-using android::trusty::fuzz::ExtraCounters;
-using android::trusty::fuzz::TrustyApp;
-
-#define TIPC_DEV "/dev/trusty-ipc-dev0"
-#define KEYMASTER_PORT "com.android.trusty.keymaster"
-#define KEYMASTER_MODULE_FILENAME "keymaster.syms.elf"
-
-/* Keymaster TA's UUID is 5f902ace-5e5c-4cd8-ae54-87b88c22ddaf */
-static struct uuid keymaster_uuid = {
-        0x5f902ace,
-        0x5e5c,
-        0x4cd8,
-        {0xae, 0x54, 0x87, 0xb8, 0x8c, 0x22, 0xdd, 0xaf},
-};
-
-static CoverageRecord record(TIPC_DEV, &keymaster_uuid, KEYMASTER_MODULE_FILENAME);
-
-extern "C" int LLVMFuzzerInitialize(int* /* argc */, char*** /* argv */) {
-    auto ret = record.Open();
-    if (!ret.ok()) {
-        std::cerr << ret.error() << std::endl;
-        exit(-1);
-    }
-    return 0;
-}
-
-extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
-    static uint8_t buf[TIPC_MAX_MSG_SIZE];
-
-    ExtraCounters counters(&record);
-    counters.Reset();
-
-    android::trusty::fuzz::TrustyApp ta(TIPC_DEV, KEYMASTER_PORT);
-    auto ret = ta.Connect();
-    if (!ret.ok()) {
-        android::trusty::fuzz::Abort();
-    }
-
-    /* Send message to test server */
-    ret = ta.Write(data, size);
-    if (!ret.ok()) {
-        return -1;
-    }
-
-    /* Read message from test server */
-    ret = ta.Read(&buf, sizeof(buf));
-    if (!ret.ok()) {
-        return -1;
-    }
-
-    return 0;
-}