diff --git a/dev-db/opendbx/opendbx-1.4.5-r1.ebuild b/dev-db/opendbx/opendbx-1.4.5-r1.ebuild
index 222716f22f73d..d62eda3c5e8c7 100644
--- a/dev-db/opendbx/opendbx-1.4.5-r1.ebuild
+++ b/dev-db/opendbx/opendbx-1.4.5-r1.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2019 Gentoo Authors
+# Copyright 1999-2021 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI="6"
@@ -60,6 +60,9 @@ src_configure() {
 		append-ldflags -L"${ORACLE_HOME}"
 	fi
 
+	# bug #788304
+	append-cxxflags -std=c++14
+
 	econf --with-backends="${backends}"
 }
 
diff --git a/dev-db/opendbx/opendbx-1.4.6-r2.ebuild b/dev-db/opendbx/opendbx-1.4.6-r2.ebuild
index 5c3009011be6d..7ba0179bedaab 100644
--- a/dev-db/opendbx/opendbx-1.4.6-r2.ebuild
+++ b/dev-db/opendbx/opendbx-1.4.6-r2.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2019 Gentoo Authors
+# Copyright 1999-2021 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI="6"
@@ -60,6 +60,9 @@ src_configure() {
 		append-ldflags -L"${ORACLE_HOME}"
 	fi
 
+	# bug #788304
+	append-cxxflags -std=c++14
+
 	econf --with-backends="${backends}"
 }