diff --git a/include/console.h b/include/console.h
index a16db9a..cfd9dc1 100644
--- a/include/console.h
+++ b/include/console.h
@@ -5,6 +5,5 @@ void potato_uart_irq_en(void);
 void potato_uart_irq_dis(void);
 int getchar(void);
 int putchar(int c);
-void putstr(const char *str, unsigned long len);
 int puts(const char *str);
 size_t strlen(const char *s);
diff --git a/lib/console.c b/lib/console.c
index 66a7d3a..fa2ade3 100644
--- a/lib/console.c
+++ b/lib/console.c
@@ -107,13 +107,6 @@ int putchar(int c)
 	return c;
 }
 
-void putstr(const char *str, unsigned long len)
-{
-	for (unsigned long i = 0; i < len; i++) {
-		putchar(str[i]);
-	}
-}
-
 int puts(const char *str)
 {
 	unsigned int i;