diff --git a/.gitignore b/.gitignore
index c35f46609f..0d4164b50c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,6 +23,8 @@ documentation/html
 *.a
 *.i
 *.d
+#source insight 4 project files
+*.si4project 
 tools/kconfig-frontends/kconfig-mconf
 packages
 dist