diff --git a/src/build_sha1sums.tcl b/src/build_sha1sums.tcl
index 9411dc7..2fe0111 100644
--- a/src/build_sha1sums.tcl
+++ b/src/build_sha1sums.tcl
@@ -81,6 +81,9 @@ proc do_sha1_in_folder {binaryfolder level} {
     if {[dict size $existing_sha_dict] != [dict size $new_sha_dict] || $changes > 0} {
         puts stderr "${indent}rewriting sha file at $shafile"
         set fd [open $shafile w]
+        #LF: CRLF sha1sums trip line-based consumers (punk-runtime's bash payload
+        #reads names with a trailing \r; msys grep strips it, bash read does not)
+        fconfigure $fd -translation lf
         dict for {h f} $new_sha_dict {
             puts -nonewline $fd "$h *$f\n"
         }