diff --git a/arch/x86/.gitignore b/arch/x86/.gitignore
index aff152c87cf4ba62ed26ed6b7eb567b576dd84fd..5a82bac5e0bc7985529aa537e981997109945309 100644
--- a/arch/x86/.gitignore
+++ b/arch/x86/.gitignore
@@ -1,6 +1,7 @@
 boot/compressed/vmlinux
 tools/test_get_len
 tools/insn_sanity
+tools/insn_decoder_test
 purgatory/kexec-purgatory.c
 purgatory/purgatory.ro