diff --git a/package/optee-client/optee-client.mk b/package/optee-client/optee-client.mk
index 8108fc2130..7f613f724d 100644
--- a/package/optee-client/optee-client.mk
+++ b/package/optee-client/optee-client.mk
@@ -11,7 +11,8 @@ OPTEE_CLIENT_LICENSE_FILES = LICENSE
 OPTEE_CLIENT_INSTALL_STAGING = YES
 
 OPTEE_CLIENT_CONF_OPTS = \
-	-DCFG_TEE_FS_PARENT_PATH=$(BR2_PACKAGE_OPTEE_CLIENT_TEE_FS_PATH)
+	-DCFG_TEE_FS_PARENT_PATH=$(BR2_PACKAGE_OPTEE_CLIENT_TEE_FS_PATH) \
+	-DCFG_WERROR=OFF
 
 define OPTEE_CLIENT_INSTALL_INIT_SYSV
 	$(INSTALL) -m 0755 -D $(OPTEE_CLIENT_PKGDIR)/S30optee \