diff --git a/BUILD.gn b/BUILD.gn
index ea976b32cdb4ef68ec56ace013d96055019fb620..a1a6a9bc76c50f93ea1748ff6a2e12d4f505348b 100755
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -86,6 +86,7 @@ ohos_shared_library("glibpcre") {
     "-D_GNU_SOURCE",
     "-DHAVE_CONFIG_H",
     "-DSUPPORT_PCRE2_8=1",
+    "-DSUPPORT_UNICODE=1",
     "-DPCRE2_CODE_UNIT_WIDTH=8",
     "-w",
   ]