diff --git a/t/t7800-difftool.sh b/t/t7800-difftool.sh
index 196f02227d..4e713f7aa5 100755
--- a/t/t7800-difftool.sh
+++ b/t/t7800-difftool.sh
@@ -10,14 +10,6 @@ Testing basic diff tool invocation
 
 . ./test-lib.sh
 
-if test_have_prereq MINGW
-then
-	# Avoid posix-to-windows path mangling
-	pwd () {
-		builtin pwd
-	}
-fi
-
 difftool_test_setup ()
 {
 	test_config diff.tool test-tool &&