diff --git a/opticsmon/ethtool.c b/opticsmon/ethtool.c
index 5ac11dfb..103644a1 100644
--- a/opticsmon/ethtool.c
+++ b/opticsmon/ethtool.c
@@ -1,4 +1,3 @@
-#include <execinfo.h>
 #include <sys/wait.h>
 #include <sys/socket.h>
 #include <fcntl.h>