diff --git a/src/main.m4 b/src/main.m4
index 3161540..c5ab6fb 100644
--- a/src/main.m4
+++ b/src/main.m4
@@ -119,7 +119,7 @@ define(
 _MAKEFILE_UPDATE_URL,
 $(shell \
 curl https://api.github.com/repos/alejandrogallo/latex-makefile/releases/latest | \
-sed -n 's/.*browser_download_url":.*"\(.*\)"/\1/p' \
+$(SED) -n 's/.*browser_download_url":.*"\(.*\)"/\1/p' \
 )
 )dnl
 include_once(common-makefile/src/update.m4)