diff --git a/armsrc/lfsampling.c b/armsrc/lfsampling.c
index eea2a4c86..0926cca04 100644
--- a/armsrc/lfsampling.c
+++ b/armsrc/lfsampling.c
@@ -24,7 +24,7 @@ Default LF config is set to:
     divisor = 95 (125kHz)
     trigger_threshold = 0
     */
-sample_config config = { 1, 8, 1, 95, 0 } ;
+sample_config config = { 1, 8, 1, 95, 0, 0 } ;
 
 void printConfig() {
     DbpString(_BLUE_("LF Sampling config"));