diff --git a/sdk_container/src/third_party/portage-stable/dev-libs/libksba/libksba-1.6.7.ebuild b/sdk_container/src/third_party/portage-stable/dev-libs/libksba/libksba-1.6.7.ebuild
index e7b5624907..c0c8449f81 100644
--- a/sdk_container/src/third_party/portage-stable/dev-libs/libksba/libksba-1.6.7.ebuild
+++ b/sdk_container/src/third_party/portage-stable/dev-libs/libksba/libksba-1.6.7.ebuild
@@ -49,6 +49,7 @@ my_src_configure() {
 
 		GPG_ERROR_CONFIG="${ESYSROOT}/usr/bin/${CHOST}-gpg-error-config"
 		LIBGCRYPT_CONFIG="${ESYSROOT}/usr/bin/${CHOST}-libgcrypt-config"
+		GPGRT_CONFIG="${ESYSROOT}/usr/bin/${CHOST}-gpgrt-config"
 	)
 
 	econf "${myeconfargs[@]}"