diff --git a/sci-libs/cblas-reference/cblas-reference-20151113-r2.ebuild b/sci-libs/cblas-reference/cblas-reference-20151113-r2.ebuild
index 90ce15319a0e6..1fb8df2d9def4 100644
--- a/sci-libs/cblas-reference/cblas-reference-20151113-r2.ebuild
+++ b/sci-libs/cblas-reference/cblas-reference-20151113-r2.ebuild
@@ -1,7 +1,8 @@
-# Copyright 1999-2017 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
+CMAKE_MAKEFILE_GENERATOR=emake
 
 inherit eutils fortran-2 cmake-utils multilib flag-o-matic toolchain-funcs
 
diff --git a/sci-libs/cblas-reference/cblas-reference-20161223.ebuild b/sci-libs/cblas-reference/cblas-reference-20161223.ebuild
index 8ad5308167eb7..817aaa188ef1e 100644
--- a/sci-libs/cblas-reference/cblas-reference-20161223.ebuild
+++ b/sci-libs/cblas-reference/cblas-reference-20161223.ebuild
@@ -1,7 +1,8 @@
-# Copyright 1999-2017 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
+CMAKE_MAKEFILE_GENERATOR=emake
 
 inherit eutils fortran-2 cmake-utils multilib flag-o-matic toolchain-funcs