diff --git a/package/postgresql/postgresql.mk b/package/postgresql/postgresql.mk
index 1a6aa88028..eda547c180 100644
--- a/package/postgresql/postgresql.mk
+++ b/package/postgresql/postgresql.mk
@@ -11,7 +11,9 @@ POSTGRESQL_LICENSE = PostgreSQL
 POSTGRESQL_LICENSE_FILES = COPYRIGHT
 POSTGRESQL_INSTALL_STAGING = YES
 POSTGRESQL_CONFIG_SCRIPTS = pg_config
-POSTGRESQL_CONF_ENV = ac_cv_type_struct_sockaddr_in6=yes
+POSTGRESQL_CONF_ENV = ac_cv_type_struct_sockaddr_in6=yes \
+		      pgac_cv_snprintf_long_long_int_format="%lld" \
+		      pgac_cv_snprintf_size_t_support=yes
 POSTGRESQL_AUTORECONF = YES
 
 ifeq ($(BR2_TOOLCHAIN_USES_UCLIBC),y)