diff --git a/tests-clar/diff/patch.c b/tests-clar/diff/patch.c
index ea643e881..affa761de 100644
--- a/tests-clar/diff/patch.c
+++ b/tests-clar/diff/patch.c
@@ -299,4 +299,6 @@ void test_diff_patch__line_counts_with_eofnl(void)
 	cl_git_rewritefile("renames/songofseven.txt", content.ptr);
 
 	check_single_patch_stats(g_repo, 1, 1, 1);
+
+	git_buf_free(&content);
 }