diff --git a/.gitignore b/.gitignore
index d510f21521..48e1d0777f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -49,6 +49,7 @@
 APMrover2/test.APMrover2/
 APMrover2/way.txt
 ArduCopter/Debug/
+ArduCopter/arducopter.exe.stackdump
 ArduCopter/fence.txt
 ArduCopter/ral.txt
 ArduCopter/test.ArduCopter/