diff --git a/arch/xtensa/include/uapi/asm/setup.h b/arch/xtensa/include/uapi/asm/setup.h
index 57e6c210e84f..5356a5fd4d17 100644
--- a/arch/xtensa/include/uapi/asm/setup.h
+++ b/arch/xtensa/include/uapi/asm/setup.h
@@ -14,6 +14,4 @@
 
 #define COMMAND_LINE_SIZE	256
 
-extern void set_except_vector(int n, void *addr);
-
 #endif