diff --git a/arch/arm/mach-stm32mp/Makefile b/arch/arm/mach-stm32mp/Makefile
index 3d194de..ee8a542 100644
--- a/arch/arm/mach-stm32mp/Makefile
+++ b/arch/arm/mach-stm32mp/Makefile
@@ -8,7 +8,7 @@
 obj-y += bsec.o
 obj-y += soc.o
 
-obj-$(CONFIG_STM32MP15x) += stm32mp1/
+obj-$(CONFIG_STM32MP15X) += stm32mp1/
 obj-$(CONFIG_STM32MP13X) += stm32mp1/
 obj-$(CONFIG_STM32MP25X) += stm32mp2/