diff --git a/lib/libc/arm/SYS.h b/lib/libc/arm/SYS.h
--- a/lib/libc/arm/SYS.h
+++ b/lib/libc/arm/SYS.h
@@ -44,7 +44,6 @@
 			mov r7, ip
 
 #define	CERROR		_C_LABEL(cerror)
-#define	CURBRK		_C_LABEL(curbrk)
 
 #define _SYSCALL_NOERROR(x)						\
 	ENTRY(__CONCAT(__sys_, x));					\