diff --git a/Makefile b/Makefile
index 337220e..f41ccb0 100644
--- a/Makefile
+++ b/Makefile
@@ -70,6 +70,7 @@ AS        = $(CROSS_COMPILE)gcc
 CC        = $(CROSS_COMPILE)gcc
 CXX       = $(CROSS_COMPILE)g++
 LD        = $(CROSS_COMPILE)ld
+AR        = $(CROSS_COMPILE)ar
 OBJDUMP   = $(CROSS_COMPILE)objdump
 OBJCOPY   = $(CROSS_COMPILE)objcopy
 READELF   = $(CROSS_COMPILE)readelf
@@ -134,7 +135,7 @@ $(IMAGE).elf: $(OBJS) am $(LIBS)
 ### Rule (archive): objects (`*.o`) -> `ARCHIVE.a` (ar)
 $(ARCHIVE): $(OBJS)
 	@echo + AR "->" $(shell realpath $@ --relative-to .)
-	@ar rcs $(ARCHIVE) $(OBJS)
+	@$(AR) rcs $(ARCHIVE) $(OBJS)
 
 ### Rule (`#include` dependencies): paste in `.d` files generated by gcc on `-MMD`
 -include $(addprefix $(DST_DIR)/, $(addsuffix .d, $(basename $(SRCS))))