diff --git a/cpu/cc2430/Makefile.cc2430 b/cpu/cc2430/Makefile.cc2430
index 764403d28..47e0b70cf 100644
--- a/cpu/cc2430/Makefile.cc2430
+++ b/cpu/cc2430/Makefile.cc2430
@@ -2,7 +2,7 @@
 CC       = sdcc
 LD       = sdcc
 AS       = sdcc
-AR       = sdcclib
+AR       = sdar
 OBJCOPY  = objcopy
 STRIP    = strip
 PACKIHX  = packihx
@@ -18,7 +18,7 @@ LDFLAGS += --code-loc $(START_ADDR) --code-size $(CODE_SIZE)
 
 ASFLAGS += -plosgff
 
-AROPTS   = -a
+AROPTS   = -rc
 
 ### Our object files are .rel, so we can't use the default finalize dependency
 ### generation. Override here.
diff --git a/cpu/cc253x/Makefile.cc253x b/cpu/cc253x/Makefile.cc253x
index 232b4c52a..c9e6c661d 100644
--- a/cpu/cc253x/Makefile.cc253x
+++ b/cpu/cc253x/Makefile.cc253x
@@ -2,7 +2,7 @@
 CC       = sdcc
 LD       = sdcc
 AS       = sdcc
-AR       = sdcclib
+AR       = sdar
 OBJCOPY  = objcopy
 STRIP    = strip
 
@@ -24,7 +24,7 @@ LDFLAGS += --code-loc $(START_ADDR) --code-size $(CODE_SIZE)
 
 ASFLAGS += -plosgff
 
-AROPTS   = -a
+AROPTS   = -rc
 
 ### Our object files are .rel, so we can't use the default finalize dependency
 ### generation. Override here.