diff --git a/test/fuzztest/appgroupcallbackstub_fuzzer/BUILD.gn b/test/fuzztest/appgroupcallbackstub_fuzzer/BUILD.gn
index adb9a94c5c6a5f1b11e5e1775fadf76e68f5a1d5..e0bc1aa8aacbe93f0f8a62dbd1cd932557cc4524 100644
--- a/test/fuzztest/appgroupcallbackstub_fuzzer/BUILD.gn
+++ b/test/fuzztest/appgroupcallbackstub_fuzzer/BUILD.gn
@@ -73,11 +73,9 @@ ohos_fuzztest("AppgroupcallbackstubFuzzTest") {
     "time_service:time_client",
   ]
 
-  defines = []
-
   if (bgtaskmgr_enable) {
     external_deps += [ "background_task_mgr:bgtaskmgr_innerkits" ]
-    defines += [ "BGTASKMGR_ENABLE" ]
+    defines = [ "BGTASKMGR_ENABLE" ]
   }
   if (os_account_part_enabled) {
     cflags_cc = [ "-DOS_ACCOUNT_PART_ENABLED" ]
diff --git a/test/fuzztest/bundleactiveobserver_fuzzer/BUILD.gn b/test/fuzztest/bundleactiveobserver_fuzzer/BUILD.gn
index cae3907e4ec408033330a21d3ed7a123bb224bde..d074932a4263bf9a7b3d9d664404c1dc2d4ed7e4 100644
--- a/test/fuzztest/bundleactiveobserver_fuzzer/BUILD.gn
+++ b/test/fuzztest/bundleactiveobserver_fuzzer/BUILD.gn
@@ -76,11 +76,9 @@ ohos_fuzztest("BundleActiveObserverFuzzTest") {
     "time_service:time_client",
   ]
 
-  defines = []
-
   if (bgtaskmgr_enable) {
     external_deps += [ "background_task_mgr:bgtaskmgr_innerkits" ]
-    defines += [ "BGTASKMGR_ENABLE" ]
+    defines = [ "BGTASKMGR_ENABLE" ]
   }
   if (os_account_part_enabled) {
     cflags_cc = [ "-DOS_ACCOUNT_PART_ENABLED" ]
diff --git a/test/fuzztest/bundleactiveonremoterequest_fuzzer/BUILD.gn b/test/fuzztest/bundleactiveonremoterequest_fuzzer/BUILD.gn
index 1b0050b1a61b67e38acc751793f53d8f7621dca5..1bb0906419d2fb0b2fc8a332e0020f00732eb6fe 100644
--- a/test/fuzztest/bundleactiveonremoterequest_fuzzer/BUILD.gn
+++ b/test/fuzztest/bundleactiveonremoterequest_fuzzer/BUILD.gn
@@ -72,11 +72,9 @@ ohos_fuzztest("BundleActiveOnRemoteRequestFuzzTest") {
     "time_service:time_client",
   ]
 
-  defines = []
-
   if (bgtaskmgr_enable) {
     external_deps += [ "background_task_mgr:bgtaskmgr_innerkits" ]
-    defines += [ "BGTASKMGR_ENABLE" ]
+    defines = [ "BGTASKMGR_ENABLE" ]
   }
   if (os_account_part_enabled) {
     cflags_cc = [ "-DOS_ACCOUNT_PART_ENABLED" ]
diff --git a/test/fuzztest/bundleactivepowerstatecallbackproxy_fuzzer/BUILD.gn b/test/fuzztest/bundleactivepowerstatecallbackproxy_fuzzer/BUILD.gn
index 071d7566dda99d87058d692e42fee95949195d0d..3b2f2e645ee0b7792869053fc3bae94ae421c66e 100644
--- a/test/fuzztest/bundleactivepowerstatecallbackproxy_fuzzer/BUILD.gn
+++ b/test/fuzztest/bundleactivepowerstatecallbackproxy_fuzzer/BUILD.gn
@@ -77,11 +77,9 @@ ohos_fuzztest("BundleActivePowerstateCallbackproxyFuzzTest") {
     "time_service:time_client",
   ]
 
-  defines = []
-
   if (bgtaskmgr_enable) {
     external_deps += [ "background_task_mgr:bgtaskmgr_innerkits" ]
-    defines += [ "BGTASKMGR_ENABLE" ]
+    defines = [ "BGTASKMGR_ENABLE" ]
   }
   if (os_account_part_enabled) {
     cflags_cc = [ "-DOS_ACCOUNT_PART_ENABLED" ]