diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index da39c608a28cb910a98697345afa15e8929711e0..95cd63b43b99fa83798fb68dadfbd95a8c0bc57c 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -17,6 +17,7 @@
  */
 
 #include <stdarg.h>
+#include <linux/clk.h>
 #include <linux/clk-provider.h>
 #include <linux/module.h>	/* for KSYM_SYMBOL_LEN */
 #include <linux/types.h>