diff --git a/settingtypes.txt b/settingtypes.txt
index 7576f18..88dfbeb 100644
--- a/settingtypes.txt
+++ b/settingtypes.txt
@@ -23,7 +23,7 @@ mesecon.luacontroller_string_rep_max (string:rep result length limit) int 64000
 mesecon.luacontroller_digiline_maxlen (Digiline message size limit) int 50000 1000 1000000
 mesecon.luacontroller_maxevents (Controller execution time limit) int 10000 1000 100000
 mesecon.luacontroller_memsize (Controller memory limit) int 100000 10000 1000000
-mesecon.luacontroller_minimum_interrupt (Minimum interrupt time) fload 1 0.1 1000000
+mesecon.luacontroller_minimum_interrupt (Minimum interrupt time) float 1 0.1 1000000
 
 # Use node timer for interrupts (runs in active blocks only).
 # IID is ignored and at most one interrupt may be queued if this setting is enabled.