diff --git a/steps-guix/mes-minimal-stripped-0.19-i686-linux/pass1.sh b/steps-guix/mes-minimal-stripped-0.19-i686-linux/pass1.sh
index cdb373cd..02d012af 100644
--- a/steps-guix/mes-minimal-stripped-0.19-i686-linux/pass1.sh
+++ b/steps-guix/mes-minimal-stripped-0.19-i686-linux/pass1.sh
@@ -8,13 +8,17 @@ src_prepare() { :; }
 src_configure() { :; }
 
 src_compile() {
-    local stage
+    local stage mes_src
     stage="/tmp/mes-minimal-stripped-0.19-i686-linux"
+    mes_src=/usr/bin/mes-m2
 
     rm -rf "${stage}"
     mkdir -p "${stage}/bin"
 
-    seed_install_exec /usr/bin/mes "${stage}/bin/mes"
+    # steps/mes-0.27.1/pass1.kaem installs the Mes binary as /usr/bin/mes-m2.
+    # Guix bootstrap seed expects the binary name "mes" inside the tarball.
+    seed_require_file "${mes_src}"
+    seed_install_exec "${mes_src}" "${stage}/bin/mes"
     seed_make_repro_tar_xz "${stage}" "${DISTFILES}/mes-minimal-stripped-0.19-i686-linux.tar.xz"
 }