diff --git a/sys-auth/sssd/sssd-2.10.1.ebuild b/sys-auth/sssd/sssd-2.10.1.ebuild
index 7e146e674287d..3f04d442515fa 100644
--- a/sys-auth/sssd/sssd-2.10.1.ebuild
+++ b/sys-auth/sssd/sssd-2.10.1.ebuild
@@ -259,7 +259,8 @@ multilib_src_configure() {
 		# Annoyingly configure requires that you pick systemd XOR sysv
 		--with-initscript=$(usex systemd systemd sysv)
 		--with-sssd-user=sssd
-		 CPPFLAGS="${CPPFLAGS} -I/usr/include/samba-4.0"
+		KRB5_CONFIG="${ESYSROOT}"/usr/bin/krb5-config
+		CPPFLAGS="${CPPFLAGS} -I${ESYSROOT}/usr/include/samba-4.0"
 	)
 
 	use systemd && myconf+=(