diff --git a/libwvdrmengine/mediadrm/src_hidl/WVDrmPlugin.cpp b/libwvdrmengine/mediadrm/src_hidl/WVDrmPlugin.cpp
index 079721fd..fba57336 100644
--- a/libwvdrmengine/mediadrm/src_hidl/WVDrmPlugin.cpp
+++ b/libwvdrmengine/mediadrm/src_hidl/WVDrmPlugin.cpp
@@ -1778,8 +1778,9 @@ Return<void> WVDrmPlugin::signRSA(
 
   const auto& self = android::hardware::IPCThreadState::self();
   const char* sid = self->getCallingSid();
-  if (!sid || (!strstr(sid, "mediashell_app") && !strstr(sid, "mediadrmserver"))) {
-    ALOGE("Only mediashell/mediadrmserver can call signRSA");
+  if (!sid || (!strstr(sid, "mediashell_app") && !strstr(sid, "priv_app")
+               && !strstr(sid, "mediadrmserver"))) {
+    ALOGE("Only mediashell/priv-app/mediadrmserver can call signRSA");
     _hidl_cb(Status::ERROR_DRM_UNKNOWN, hidl_vec<uint8_t>());
     return Void();
   }