diff --git a/src/rds.c b/src/rds.c
index fd1ee93..df2435a 100644
--- a/src/rds.c
+++ b/src/rds.c
@@ -217,7 +217,7 @@ static void get_rds_ps_group(RDSEncoder* enc, uint16_t *blocks) {
 				}
 			} else {
 				if(enc->data[enc->program].dps1_len > PS_LENGTH) {
-					uint8_t scroll_threshold = (enc->data[enc->program].dps1_mode == 0) ? 8 : 6;
+					uint8_t scroll_threshold = (enc->data[enc->program].dps_speed == 0) ? 8 : 6;
 
 					if(enc->state[enc->program].dynamic_ps_scroll_counter >= scroll_threshold) {
 						switch(enc->data[enc->program].dps1_mode) {