diff --git a/drivers/clk/clk_sandbox.c b/drivers/clk/clk_sandbox.c
index cc084b0..768fbb7 100644
--- a/drivers/clk/clk_sandbox.c
+++ b/drivers/clk/clk_sandbox.c
@@ -7,6 +7,7 @@
 #include <clk-uclass.h>
 #include <dm.h>
 #include <errno.h>
+#include <malloc.h>
 #include <asm/clk.h>
 
 struct sandbox_clk_priv {