diff --git a/git-gui.sh b/git-gui.sh
index bf6869961..dc53e9a8f 100755
--- a/git-gui.sh
+++ b/git-gui.sh
@@ -670,9 +670,7 @@ proc kill_file_process {fd} {
 
 	catch {
 		if {[is_Windows]} {
-			# Use a Cygwin-specific flag to allow killing
-			# native Windows processes
-			exec kill -f $process
+			exec taskkill /pid $process
 		} else {
 			exec kill $process
 		}