diff --git a/examples/blinky/Makefile b/examples/blinky/Makefile
index 904e9ead10..2d58be2d6b 100644
--- a/examples/blinky/Makefile
+++ b/examples/blinky/Makefile
@@ -19,9 +19,3 @@ QUIET ?= 1
 FEATURES_OPTIONAL += periph_timer
 
 include $(RIOTBASE)/Makefile.include
-
-ifeq (native,$(BOARD))
-  # For the native board, CLOCK_CORECLOCK is undefined. But we need
-  # a valid number to get the example compiled
-  CFLAGS += -DCLOCK_CORECLOCK=1000000000
-endif
diff --git a/examples/blinky/main.c b/examples/blinky/main.c
index 038cd27d6d..ac90ccbc15 100644
--- a/examples/blinky/main.c
+++ b/examples/blinky/main.c
@@ -20,6 +20,7 @@
 
 #include <stdio.h>
 
+#include "clk.h"
 #include "board.h"
 #include "periph_conf.h"
 #include "timex.h"
@@ -41,7 +42,8 @@ static void delay(void)
          * compilers would detect that the loop is only wasting CPU cycles and
          * optimize it out - but here the wasting of CPU cycles is desired.
          */
-        for (volatile uint32_t i = 0; i < CLOCK_CORECLOCK / 20; i++) { }
+        uint32_t loops = coreclk() / 20;
+        for (volatile uint32_t i = 0; i < loops; i++) { }
     }
 }