diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index 9f6a26d72f9fe66c405b27d62414feaf71e8d2cb..0f20f84de53b81941a6525f113adf66723e7645a 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -228,7 +228,7 @@ libs-y				+= arch/mips/fw/lib/
 #
 # Kernel compression
 #
-ifdef SYS_SUPPORTS_ZBOOT
+ifdef CONFIG_SYS_SUPPORTS_ZBOOT
 COMPRESSION_FNAME		= vmlinuz
 else
 COMPRESSION_FNAME		= vmlinux