diff --git a/make_helpers/build_macros.mk b/make_helpers/build_macros.mk
index f0219c7..a5c93a6 100644
--- a/make_helpers/build_macros.mk
+++ b/make_helpers/build_macros.mk
@@ -504,7 +504,7 @@
 define MAKE_BL
         $(eval BUILD_DIR  := ${BUILD_PLAT}/$(1))
         $(eval BL_SOURCES := $($(call uppercase,$(1))_SOURCES))
-        $(eval SOURCES    := $(BL_SOURCES) $(BL_COMMON_SOURCES) $(PLAT_BL_COMMON_SOURCES))
+        $(eval SOURCES    := $(sort $(BL_SOURCES) $(BL_COMMON_SOURCES) $(PLAT_BL_COMMON_SOURCES)))
         $(eval OBJS       := $(addprefix $(BUILD_DIR)/,$(call SOURCES_TO_OBJS,$(SOURCES))))
         $(eval MAPFILE    := $(call IMG_MAPFILE,$(1)))
         $(eval ELF        := $(call IMG_ELF,$(1)))