diff --git a/tools/.gitignore b/tools/.gitignore
index d0176a7283f..82bdce27829 100644
--- a/tools/.gitignore
+++ b/tools/.gitignore
@@ -1,3 +1,4 @@
+/asn1_compiler
 /atmel_pmecc_params
 /bin2header
 /bmp_logo