diff --git a/radio/src/lcd.cpp b/radio/src/lcd.cpp
index e205bc300..d03df332a 100644
--- a/radio/src/lcd.cpp
+++ b/radio/src/lcd.cpp
@@ -866,7 +866,7 @@ void lcdDrawTelemetryTopBar()
 }
 #endif
 
-#if defined(PCBTARANIS)
+#if defined(CPUARM) && defined(RTCLOCK)
 void putsTime(xcoord_t x, uint8_t y, struct gtm t, LcdFlags att)
 {
   LcdFlags att2 = (att & (INVERS|BLINK)) | LEADING0;