diff --git a/libraries/AP_Baro/AP_Baro_SPL06.cpp b/libraries/AP_Baro/AP_Baro_SPL06.cpp
index 655e40ee4c95cc..19bfdf336c8b88 100644
--- a/libraries/AP_Baro/AP_Baro_SPL06.cpp
+++ b/libraries/AP_Baro/AP_Baro_SPL06.cpp
@@ -17,6 +17,7 @@
 #if AP_BARO_SPL06_ENABLED
 
 #include <utility>
+#include <strings.h>
 #include <AP_Math/definitions.h>
 
 extern const AP_HAL::HAL &hal;