diff --git a/src/arch/mips/Makefile.inc b/src/arch/mips/Makefile.inc
index 956f2d511f..42c3007754 100644
--- a/src/arch/mips/Makefile.inc
+++ b/src/arch/mips/Makefile.inc
@@ -44,7 +44,7 @@ bootblock-y += ../../lib/memset.c
 
 bootblock_lds = $(src)/arch/mips/bootblock.ld
 
-bootblock_inc += $(src)/arch/mips/bootblock.inc
+bootblock_inc += $(src)/arch/mips/bootblock.S
 bootblock_inc += $(objgenerated)/bootblock.inc
 
 # Much of the assembly code is generated by the compiler, and may contain
diff --git a/src/arch/mips/bootblock.inc b/src/arch/mips/bootblock.S
similarity index 100%
rename from src/arch/mips/bootblock.inc
rename to src/arch/mips/bootblock.S