diff --git a/src/rds.cpp b/src/rds.cpp
index b3501c0..2724314 100644
--- a/src/rds.cpp
+++ b/src/rds.cpp
@@ -76,7 +76,7 @@ void ShowAdvancedRDS() {
   }
 
   String afstring;
-  if (radio.rds.hasAF) for (byte i = 0; i < radio.af_counter; i++) afstring += String(radio.af[i].frequency / 100) + "." + String((radio.af[i].frequency % 100) / 10) + (i == radio.af_counter - 1 ? "          " : " | "); else afstring = myLanguage[language][87];
+  if (radio.rds.hasAF && radio.af_counter > 0) for (byte i = 0; i < radio.af_counter; i++) afstring += String(radio.af[i].frequency / 100) + "." + String((radio.af[i].frequency % 100) / 10) + (i == radio.af_counter - 1 ? "          " : " | "); else afstring = myLanguage[language][87];
   if (hasafold != radio.rds.hasAF) {
     if (!screenmute) {
       if (radio.rds.hasAF) tftPrint(-1, "AF", 50, 51, RDSColor, RDSColorSmooth, 16); else tftPrint(-1, "AF", 50, 51, GreyoutColor, BackgroundColor, 16);