diff --git a/arch/arm/mach-orion5x/Makefile b/arch/arm/mach-orion5x/Makefile
index 33dcad4..5249aa8 100644
--- a/arch/arm/mach-orion5x/Makefile
+++ b/arch/arm/mach-orion5x/Makefile
@@ -19,7 +19,7 @@
 
 # some files can only build in ARM or THUMB2, not THUMB1
 
-ifdef CONFIG_SYS_THUMB_BUILD
+ifdef CONFIG_$(SPL_)SYS_THUMB_BUILD
 ifndef CONFIG_HAS_THUMB2
 
 CFLAGS_cpu.o := -marm