diff --git a/contrib/install_db4.sh b/contrib/install_db4.sh
index 7cfbf9ffb..909fa2eab 100755
--- a/contrib/install_db4.sh
+++ b/contrib/install_db4.sh
@@ -17,7 +17,6 @@ expand_path() {
 }
 
 BDB_PREFIX="$(expand_path ${1})/db4"; shift;
-BDB_EXTRA_CONFIGURE_FLAGS="${@}"
 BDB_VERSION='db-4.8.30.NC'
 BDB_HASH='12edc0df75bf9abd7f82f821795bcee50f42cb2e5f76a6a281b85732798364ef'
 BDB_URL="https://download.oracle.com/berkeley-db/${BDB_VERSION}.tar.gz"
@@ -70,7 +69,7 @@ cd build_unix/
 
 "${BDB_PREFIX}/${BDB_VERSION}/dist/configure" \
   --enable-cxx --disable-shared --with-pic --prefix="${BDB_PREFIX}" \
-  "${BDB_EXTRA_CONFIGURE_FLAGS}"
+  "${@}"
 
 make install