diff --git a/configs/launchxl-cc1312r1/include/board.h b/configs/launchxl-cc1312r1/include/board.h
index de33fbe485b..001377bf43a 100644
--- a/configs/launchxl-cc1312r1/include/board.h
+++ b/configs/launchxl-cc1312r1/include/board.h
@@ -48,6 +48,10 @@
 
 /* Clocking *****************************************************************/
 
+/* Frequency of the ARM core clock */
+
+#define SYSCLK_FREQUENCY      48000000
+
 /* LED definitions **********************************************************/
 
 /* Button definitions *******************************************************/