diff --git a/BUILD.gn b/BUILD.gn
index 3fa1dbc2e1577e64a1178bd9b486b949d0661fe3..e77a62ef1776bc0b7a93a717723170cc84ca16ba 100755
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -31,9 +31,6 @@ config("ipc_util_config") {
   if (is_double_framework) {
     cflags = [ "-DCONFIG_DUAL_FRAMEWORK" ]
   }
-  if (target_cpu == "arm") {
-    cflags += [ "-DBINDER_IPC_32BIT" ]
-  }
   if (is_standard_system) {
     cflags += [ "-DCONFIG_STANDARD_SYSTEM" ]
   }
diff --git a/interfaces/innerkits/libdbinder/BUILD.gn b/interfaces/innerkits/libdbinder/BUILD.gn
index b059cdda8b97b2787569b7cf5d3da47739729f8e..dbe9ad94ac7d8f06e2b96c204dcd0c31cf951d8f 100755
--- a/interfaces/innerkits/libdbinder/BUILD.gn
+++ b/interfaces/innerkits/libdbinder/BUILD.gn
@@ -19,9 +19,6 @@ DBINDER_ROOT = "$SUBSYSTEM_DIR/services/dbinder"
 config("libdbinder_config") {
   visibility = [ ":*" ]
   cflags = []
-  if (target_cpu == "arm") {
-    cflags = [ "-DBINDER_IPC_32BIT" ]
-  }
   if (is_standard_system) {
     cflags += [ "-DCONFIG_STANDARD_SYSTEM" ]
   }