diff --git a/.gitignore b/.gitignore
index 793d33aadd..d2088e5205 100644
--- a/.gitignore
+++ b/.gitignore
@@ -83,6 +83,7 @@
 /tools/pktdumper
 /tools/probetest
 /tools/qt-faststart
+/tools/sidxindex
 /tools/trasher
 /tools/seek_print
 /tools/uncoded_frame