diff --git a/libraries/AP_Airspeed/AP_Airspeed.cpp b/libraries/AP_Airspeed/AP_Airspeed.cpp
index bdbe630631..3256b4f227 100644
--- a/libraries/AP_Airspeed/AP_Airspeed.cpp
+++ b/libraries/AP_Airspeed/AP_Airspeed.cpp
@@ -246,7 +246,7 @@ void AP_Airspeed::convert_per_instance()
         return;
     }
 
-    const struct convert_table {
+    static const struct convert_table {
         uint32_t element[2];
         ap_var_type type;
         const char* name;