diff --git a/tests/bloom_bytes/main.c b/tests/bloom_bytes/main.c
index 95990d72b6..f611e6f4ba 100644
--- a/tests/bloom_bytes/main.c
+++ b/tests/bloom_bytes/main.c
@@ -111,7 +111,6 @@ int main(void)
     /* Use 'fmt/print_float' to work on all platforms (atmega)
      * Stdout should be flushed before to prevent garbled output. */
 #ifdef MODULE_NEWLIB
-    /* no fflush on msp430 */
     fflush(stdout);
 #endif
     print_float(false_positive_rate, 6);
diff --git a/tests/conn_can/Makefile b/tests/conn_can/Makefile
index 38be024118..322ee38f58 100644
--- a/tests/conn_can/Makefile
+++ b/tests/conn_can/Makefile
@@ -1,7 +1,5 @@
 include ../Makefile.tests_common
 
-FEATURES_BLACKLIST += arch_msp430
-
 USEMODULE += shell
 USEMODULE += shell_commands
 USEMODULE += ps
diff --git a/tests/driver_cc110x/Makefile b/tests/driver_cc110x/Makefile
index 33f91d32b9..a237ce6918 100644
--- a/tests/driver_cc110x/Makefile
+++ b/tests/driver_cc110x/Makefile
@@ -3,9 +3,6 @@ include ../Makefile.tests_common
 
 DEVICE ?= cc1100 # The MSB-A2 uses the CC1100. New boards use CC1101
 
-# stdlib.h for msp430 does not provide EXIT_FAILURE and EXIT_SUCCESS
-BOARD_BLACKLIST += msb-430 msb-430h telosb z1
-
 # This test will rely on a human interacting with the shell, so we better add
 # the shell and some commands
 USEMODULE += shell
diff --git a/tests/driver_dcf77/Makefile b/tests/driver_dcf77/Makefile
index e132c76b7a..51c27b6bab 100644
--- a/tests/driver_dcf77/Makefile
+++ b/tests/driver_dcf77/Makefile
@@ -2,5 +2,4 @@ include ../Makefile.tests_common
 
 USEMODULE += dcf77
 
-FEATURES_BLACKLIST += arch_msp430
 include $(RIOTBASE)/Makefile.include
diff --git a/tests/periph_pm/Makefile b/tests/periph_pm/Makefile
index a9e491c716..31c97a6099 100644
--- a/tests/periph_pm/Makefile
+++ b/tests/periph_pm/Makefile
@@ -1,9 +1,6 @@
 BOARD ?= slstk3401a
 include ../Makefile.tests_common
 
-# method `fflush()` is not defined for MSP-430 (#6445 will fix this)
-BOARD_BLACKLIST := chronos msb-430h msb-430 telosb z1
-
 FEATURES_OPTIONAL += periph_rtc
 FEATURES_OPTIONAL += periph_gpio_irq
 
diff --git a/tests/pkg_littlefs/Makefile b/tests/pkg_littlefs/Makefile
index ee807125e5..0cff046cf2 100644
--- a/tests/pkg_littlefs/Makefile
+++ b/tests/pkg_littlefs/Makefile
@@ -1,11 +1,5 @@
 include ../Makefile.tests_common
 
-BOARD_BLACKLIST := chronos \
-                   msb-430 \
-                   msb-430h \
-                   telosb \
-                   z1 \
-
 USEMODULE += littlefs
 USEMODULE += embunit
 
diff --git a/tests/pkg_minmea/Makefile b/tests/pkg_minmea/Makefile
index 5e5594bba2..9747dd09a0 100644
--- a/tests/pkg_minmea/Makefile
+++ b/tests/pkg_minmea/Makefile
@@ -4,7 +4,4 @@ USEPKG += minmea
 
 USEMODULE += fmt
 
-# The MSP-430 toolchain lacks mktime and NAN
-BOARD_BLACKLIST := chronos msb-430 msb-430h telosb z1
-
 include $(RIOTBASE)/Makefile.include
diff --git a/tests/struct_tm_utility/Makefile b/tests/struct_tm_utility/Makefile
index 559d535970..31ea32d3fb 100644
--- a/tests/struct_tm_utility/Makefile
+++ b/tests/struct_tm_utility/Makefile
@@ -3,7 +3,4 @@ include ../Makefile.tests_common
 USEMODULE += shell
 USEMODULE += timex
 
-# The MSP-430 toolchain lacks sscanf:
-BOARD_BLACKLIST := chronos msb-430 msb-430h telosb z1
-
 include $(RIOTBASE)/Makefile.include
diff --git a/tests/unittests/tests-rtc/Makefile.include b/tests/unittests/tests-rtc/Makefile.include
index 02714200b8..820d6f659b 100644
--- a/tests/unittests/tests-rtc/Makefile.include
+++ b/tests/unittests/tests-rtc/Makefile.include
@@ -2,9 +2,6 @@ CFLAGS += -DRTC_NORMALIZE_COMPAT=1
 
 USEMODULE += periph_rtc_common
 
-# MSP-430's libc does not provide `mktime()` used by this test
-FEATURES_BLACKLIST += arch_msp430
-
 # AVR/ATmega uses `int8_t` for `struct tm` which leads to integer overflows
 # in these tests
 FEATURES_BLACKLIST += arch_avr8