diff --git a/tests/sys_crypto/Makefile b/tests/sys_crypto/Makefile
index 5cac356f5a..d8526a0330 100644
--- a/tests/sys_crypto/Makefile
+++ b/tests/sys_crypto/Makefile
@@ -1,26 +1,5 @@
 include ../Makefile.tests_common
 
-# Issue with integer width
-BOARD_BLACKLIST += arduino-duemilanove
-BOARD_BLACKLIST += arduino-leonardo
-BOARD_BLACKLIST += arduino-mega2560
-BOARD_BLACKLIST += arduino-nano
-BOARD_BLACKLIST += arduino-uno
-BOARD_BLACKLIST += atmega256rfr2-xpro
-BOARD_BLACKLIST += avr-rss2
-BOARD_BLACKLIST += atmega328p
-BOARD_BLACKLIST += atmega1284p
-BOARD_BLACKLIST += chronos
-BOARD_BLACKLIST += mega-xplained
-BOARD_BLACKLIST += microduino-corerf
-BOARD_BLACKLIST += msb-430
-BOARD_BLACKLIST += msb-430h
-BOARD_BLACKLIST += telosb
-BOARD_BLACKLIST += waspmote-pro
-BOARD_BLACKLIST += wsn430-v1_3b
-BOARD_BLACKLIST += wsn430-v1_4
-BOARD_BLACKLIST += z1
-
 USEMODULE += embunit
 
 USEMODULE += crypto