diff --git a/git.mk b/git.mk
index b68e54365..cf8bc57a5 100644
--- a/git.mk
+++ b/git.mk
@@ -77,7 +77,9 @@ GITIGNORE_MAINTAINERCLEANFILES_TOPLEVEL = \
 	$(srcdir)/aclocal.m4 \
 	$(srcdir)/autoscan.log \
 	$(srcdir)/configure.scan \
-	`AUX_DIR=$(srcdir)/$$($(AUTOCONF) --trace 'AC_CONFIG_AUX_DIR:$$1' $(srcdir)/configure.ac); for x in \
+	`AUX_DIR=$(srcdir)/$$($(AUTOCONF) --trace 'AC_CONFIG_AUX_DIR:$$1' $(srcdir)/configure.ac); \
+	 test "x$$AUX_DIR" = "x$(srcdir)/" && AUX_DIR=$(srcdir); \
+	 for x in \
 		ar-lib \
 		compile \
 		config.guess \