diff --git a/dev-libs/optix/optix-7.4.0.ebuild b/dev-libs/optix/optix-7.4.0.ebuild
index ab5eb71a3052a..77d9c5bacc192 100644
--- a/dev-libs/optix/optix-7.4.0.ebuild
+++ b/dev-libs/optix/optix-7.4.0.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2023 Gentoo Authors
+# Copyright 1999-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -64,7 +64,7 @@ src_unpack() {
 			cp "${DISTDIR}/${P}-${i}" "${S}/include/${i}" || die
 		done
 	else
-		tail -n +223 "${DISTDIR}"/${A} | tar -zx
+		tail -n +223 "${DISTDIR}"/${A} | tar -zx -f -
 		assert "unpacking ${A} failed"
 	fi
 }
diff --git a/dev-libs/optix/optix-7.5.0.ebuild b/dev-libs/optix/optix-7.5.0.ebuild
index 93173c78a6032..77d9c5bacc192 100644
--- a/dev-libs/optix/optix-7.5.0.ebuild
+++ b/dev-libs/optix/optix-7.5.0.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2024 Gentoo Authors
+# Copyright 1999-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -64,7 +64,7 @@ src_unpack() {
 			cp "${DISTDIR}/${P}-${i}" "${S}/include/${i}" || die
 		done
 	else
-		tail -n +223 "${DISTDIR}"/${A} | tar -zx
+		tail -n +223 "${DISTDIR}"/${A} | tar -zx -f -
 		assert "unpacking ${A} failed"
 	fi
 }