diff --git a/core/Makefile b/core/Makefile
index 7c36bb38..9e864f72 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -61,4 +61,4 @@ pubnub_proxy_unittest: $(PROJECT_SOURCEFILES) $(PROXY_PROJECT_SOURCEFILES) pubnu
 	#$(GCOVR) -r . --html --html-details -o coverage.html
 
 clean:
-	rm pubnub_core_unit_test.so pubnub_timer_list_unit_test.so pubnub_proxy_unit_test.so *.gcda *.gcno *.html
+	-rm pubnub_core_unit_test.so pubnub_timer_list_unit_test.so pubnub_proxy_unit_test.so *.gcda *.gcno *.html
diff --git a/cpp/posix.mk b/cpp/posix.mk
index 90d58c6f..1679ce76 100644
--- a/cpp/posix.mk
+++ b/cpp/posix.mk
@@ -159,4 +159,4 @@ fntest_runner: fntest/pubnub_fntest_runner.cpp $(SOURCEFILES) $(SYNC_INTF_SOURCE
 
 
 clean:
-	rm pubnub_sync_sample pubnub_callback_sample pubnub_callback_cpp11_sample pubnub_callback_subloop_sample pubnub_callback_cpp11_subloop_sample cancel_subscribe_sync_sample subscribe_publish_callback_sample futres_nesting_sync pubnub_sync_subloop_sample futres_nesting_callback futres_nesting_callback_cpp11 fntest_runner *.dSYM
+	-rm pubnub_sync_sample pubnub_callback_sample pubnub_callback_cpp11_sample pubnub_callback_subloop_sample pubnub_callback_cpp11_subloop_sample cancel_subscribe_sync_sample subscribe_publish_callback_sample futres_nesting_sync pubnub_sync_subloop_sample futres_nesting_callback futres_nesting_callback_cpp11 fntest_runner *.dSYM
diff --git a/lib/Makefile b/lib/Makefile
index 618f0a3e..2e9a193a 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -40,4 +40,4 @@ pubnub_dns_codec_unit_test: pubnub_dns_codec.c pubnub_dns_codec_unit_test.c
 	$(GCOVR) -r . --html --html-details -o coverage.html
 
 clean:
-	rm pubnub_parse_ipv6_addr_unit_test.so pubnub_dns_codec_unit_test.so *.gcda *.gcno *.html
+	-rm pubnub_parse_ipv6_addr_unit_test.so pubnub_dns_codec_unit_test.so *.gcda *.gcno *.html
diff --git a/openssl/posix.mk b/openssl/posix.mk
index fb789e2f..0723f47b 100644
--- a/openssl/posix.mk
+++ b/openssl/posix.mk
@@ -217,4 +217,4 @@ pubnub_console_callback: $(CONSOLE_SOURCEFILES) ../core/samples/console/pnc_ops_
 
 
 clean:
-	rm pubnub_sync_sample pubnub_sync_grant_token_sample pubnub_objects_secretkey_sample metadata pubnub_sync_subloop_sample cancel_subscribe_sync_sample pubnub_publish_via_post_sample pubnub_publish_via_post_secretkey_sample pubnub_callback_sample subscribe_publish_callback_sample pubnub_fntest pubnub_console_sync pubnub_console_callback pubnub_crypto_sync_sample pubnub_sync.a pubnub_callback.a pubnub_callback_subloop_sample subscribe_publish_from_callback publish_callback_subloop_sample publish_queue_callback_subloop *.o *.dSYM
+	-rm pubnub_sync_sample pubnub_sync_grant_token_sample pubnub_objects_secretkey_sample pubnub_advanced_history_sample metadata pubnub_sync_subloop_sample cancel_subscribe_sync_sample pubnub_publish_via_post_sample pubnub_publish_via_post_secretkey_sample pubnub_callback_sample subscribe_publish_callback_sample pubnub_fntest pubnub_console_sync pubnub_console_callback pubnub_crypto_sync_sample pubnub_sync.a pubnub_callback.a pubnub_callback_subloop_sample subscribe_publish_from_callback publish_callback_subloop_sample publish_queue_callback_subloop *.o *.dSYM
diff --git a/posix/posix.mk b/posix/posix.mk
index f6d163c6..bad83e29 100644
--- a/posix/posix.mk
+++ b/posix/posix.mk
@@ -187,4 +187,4 @@ pubnub_console_callback: $(CONSOLE_SOURCEFILES) ../core/samples/console/pnc_ops_
 
 
 clean:
-	rm pubnub_advanced_history_sample pubnub_sync_sample pubnub_sync_subloop_sample cancel_subscribe_sync_sample pubnub_sync_publish_retry pubnub_publish_via_post_sample pubnub_callback_sample pubnub_callback_subloop_sample subscribe_publish_callback_sample pubnub_fntest pubnub_console_sync pubnub_console_callback pubnub_sync.a pubnub_callback.a subscribe_publish_from_callback publish_callback_subloop_sample publish_queue_callback_subloop *.o *.dSYM
+	-rm metadata pubnub_advanced_history_sample pubnub_sync_sample pubnub_sync_subloop_sample cancel_subscribe_sync_sample pubnub_sync_publish_retry pubnub_publish_via_post_sample pubnub_callback_sample pubnub_callback_subloop_sample subscribe_publish_callback_sample pubnub_fntest pubnub_console_sync pubnub_console_callback pubnub_sync.a pubnub_callback.a subscribe_publish_from_callback publish_callback_subloop_sample publish_queue_callback_subloop *.o *.dSYM