diff --git a/dev-ada/gnat_util/gnat_util-2017-r2.ebuild b/dev-ada/gnat_util/gnat_util-2017-r2.ebuild
index 21237961a5b54..14bd222fea472 100644
--- a/dev-ada/gnat_util/gnat_util-2017-r2.ebuild
+++ b/dev-ada/gnat_util/gnat_util-2017-r2.ebuild
@@ -29,7 +29,7 @@ S="${WORKDIR}"/${MYP}-src
 PATCHES=( "${FILESDIR}"/${P}-gentoo.patch )
 
 src_compile() {
-	emake GNATMAKE="${GNATMAKE} ${ADAFLAGS}" \
+	emake GNATMAKE="gnatmake ${ADAFLAGS}" \
 		BUILDER="gprbuild -j$(makeopts_jobs)" generate_sources
 	if use static-libs; then
 		emake BUILDER="gprbuild -v -j$(makeopts_jobs)" build-static
diff --git a/dev-ada/gnat_util/gnat_util-2018-r2.ebuild b/dev-ada/gnat_util/gnat_util-2018-r2.ebuild
index 227d6a882a679..5183ca27da9e8 100644
--- a/dev-ada/gnat_util/gnat_util-2018-r2.ebuild
+++ b/dev-ada/gnat_util/gnat_util-2018-r2.ebuild
@@ -28,7 +28,7 @@ S="${WORKDIR}"/${MYP}-src
 PATCHES=( "${FILESDIR}"/${PN}-2017-gentoo.patch )
 
 src_compile() {
-	emake GNATMAKE="${GNATMAKE} ${ADAFLAGS}" \
+	emake GNATMAKE="gnatmake ${ADAFLAGS}" \
 		BUILDER="gprbuild -j$(makeopts_jobs)" generate_sources
 	if use static-libs; then
 		emake BUILDER="gprbuild -v -j$(makeopts_jobs)" build-static
diff --git a/dev-ada/gnat_util/gnat_util-2019-r1.ebuild b/dev-ada/gnat_util/gnat_util-2019-r1.ebuild
index 7a63a8b83b1b8..24096b6b28e7c 100644
--- a/dev-ada/gnat_util/gnat_util-2019-r1.ebuild
+++ b/dev-ada/gnat_util/gnat_util-2019-r1.ebuild
@@ -28,7 +28,7 @@ S="${WORKDIR}"/${MYP}-194CA-src
 PATCHES=( "${FILESDIR}"/${PN}-2017-gentoo.patch )
 
 src_compile() {
-	emake GNATMAKE="${GNATMAKE} ${ADAFLAGS}" \
+	emake GNATMAKE="gnatmake ${ADAFLAGS}" \
 		BUILDER="gprbuild -j$(makeopts_jobs)" generate_sources
 	if use static-libs; then
 		emake BUILDER="gprbuild -v -j$(makeopts_jobs)" build-static