diff --git a/ChangeLog b/ChangeLog
index 9712b15..0f81efe 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -5,7 +5,8 @@
 Bugfix
    * Fix bug in mbedtls_mpi_add_mpi() that caused wrong results when the three
      arguments where the same (in-place doubling). Found and fixed by Janos
-     Follath.
+     Follath. #309
+   * Fix issue in Makefile that prevented building using armar. #386
 
 = mbed TLS 1.3.16 released 2016-01-05
 
diff --git a/library/Makefile b/library/Makefile
index c7c5bf0..6a8d9ba 100644
--- a/library/Makefile
+++ b/library/Makefile
@@ -93,9 +93,9 @@
 
 libmbedtls.a: $(OBJS)
 	echo "  AR    $@"
-	$(AR) rc $@ $(OBJS)
+	$(AR) -rc $@ $(OBJS)
 	echo "  RL    $@"
-	$(AR) s $@
+	$(AR) -s $@
 
 libpolarssl.$(DLEXT): libmbedtls.$(DLEXT)
 	echo "  LN    $@ -> $?"
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index f51bc7f..dfc0061 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -213,7 +213,7 @@
 scripts/config.pl unset POLARSSL_THREADING_C
 scripts/config.pl unset POLARSSL_MEMORY_BACKTRACE # execinfo.h
 scripts/config.pl unset POLARSSL_MEMORY_BUFFER_ALLOC_C # calls exit
-CC=armcc WARNING_CFLAGS= make lib 2> armcc.stderr
+CC=armcc AR=armar WARNING_CFLAGS= make lib 2> armcc.stderr
 if [ -s armcc.stderr ]; then
     cat armcc.stderr
     exit 1;