diff --git a/libraries/AC_PID/AC_PID.cpp b/libraries/AC_PID/AC_PID.cpp
index 99b91202080aa..f7697830a625a 100644
--- a/libraries/AC_PID/AC_PID.cpp
+++ b/libraries/AC_PID/AC_PID.cpp
@@ -67,7 +67,7 @@ const AP_Param::GroupInfo AC_PID::var_info[] = {
     // @Param: IMAX
     // @DisplayName: PID Integral Maximum
     // @Description: The maximum/minimum value that the I term can output
-    AP_GROUPINFO_FLAGS_DEFAULT_POINTER("PDMAX", 5, AC_PID, _kpdmax, default_kpdmax),
+    AP_GROUPINFO_FLAGS_DEFAULT_POINTER("PDMAX", 13, AC_PID, _kpdmax, default_kpdmax),
 
     AP_GROUPEND
 };