diff --git a/.gitignore b/.gitignore
index 19bb757c3b..e225866ec6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -59,4 +59,5 @@
 /tools/pktdumper
 /tools/probetest
 /tools/qt-faststart
+/tools/sidxindex
 /tools/trasher