diff --git a/cores/arduino/wiring.cpp b/cores/arduino/wiring.cpp
index dbc47758..fe3f8c8c 100644
--- a/cores/arduino/wiring.cpp
+++ b/cores/arduino/wiring.cpp
@@ -39,7 +39,7 @@ unsigned long micros() {
 
 void delay(unsigned long ms)
 {
-  thread_sleep_for(ms);
+  ThisThread::sleep_for(ms);
 }
 
 void delayMicroseconds(unsigned int us)