diff --git a/system/ping/ping.c b/system/ping/ping.c
index f03aa609b..a01950a64 100644
--- a/system/ping/ping.c
+++ b/system/ping/ping.c
@@ -30,7 +30,6 @@
 #include <stdio.h>
 #include <string.h>
 #include <errno.h>
-#include <nuttx/lib/math.h>
 #include <limits.h>
 #include <fixedmath.h>
 
diff --git a/system/ping6/ping6.c b/system/ping6/ping6.c
index d039ced0a..ac201d7c3 100644
--- a/system/ping6/ping6.c
+++ b/system/ping6/ping6.c
@@ -30,7 +30,6 @@
 #include <stdio.h>
 #include <string.h>
 #include <errno.h>
-#include <nuttx/lib/math.h>
 #include <limits.h>
 #include <fixedmath.h>