diff --git a/src/rds.c b/src/rds.c
index 1b218dc..3cfb501 100644
--- a/src/rds.c
+++ b/src/rds.c
@@ -503,6 +503,11 @@ void set_rds_ps(unsigned char *ps) {
 void set_rds_tps(unsigned char *tps) {
 	uint8_t len = 0;
 
+	if(tps[0] == '\0') {
+		memset(rds_data.tps, 0, PS_LENGTH);
+		return;
+	}
+
 	rds_state.tps_update = 1;
 	memset(rds_data.tps, ' ', PS_LENGTH);
 	while (*tps != 0 && len < PS_LENGTH)
@@ -512,7 +517,7 @@ void set_rds_tps(unsigned char *tps) {
 void set_rds_lps(unsigned char *lps) {
 	uint8_t i = 0, len = 0;
 
-	if (!lps[0]) {
+	if(lps[0] == '\0') {
 		memset(rds_data.lps, 0, LPS_LENGTH);
 		return;
 	}