diff --git a/hal/tests/TESTS/mbed_hal/sleep/main.cpp b/hal/tests/TESTS/mbed_hal/sleep/main.cpp
index 6e745f3e94..84eb2627d2 100644
--- a/hal/tests/TESTS/mbed_hal/sleep/main.cpp
+++ b/hal/tests/TESTS/mbed_hal/sleep/main.cpp
@@ -228,9 +228,9 @@ utest::v1::status_t greentea_test_setup(const size_t number_of_cases)
     ticker_suspend(get_us_ticker_data());
 
 #ifdef DEVICE_SEMIHOST
-	// Disconnect semihosting now, because otherwise it will get disconnected on the first sleep call and
-	// cause said call to take several milliseconds, leading to a test failure.
-	mbed_interface_disconnect();
+    // Disconnect semihosting now, because otherwise it will get disconnected on the first sleep call and
+    // cause said call to take several milliseconds, leading to a test failure.
+    mbed_interface_disconnect();
 #endif
 
     us_ticker_init();
diff --git a/rtos/tests/TESTS/mbed_rtos/MemoryPool/main.cpp b/rtos/tests/TESTS/mbed_rtos/MemoryPool/main.cpp
index aef54dc9f7..d7cc09f93c 100644
--- a/rtos/tests/TESTS/mbed_rtos/MemoryPool/main.cpp
+++ b/rtos/tests/TESTS/mbed_rtos/MemoryPool/main.cpp
@@ -677,9 +677,9 @@ utest::v1::status_t greentea_test_setup(const size_t number_of_cases)
     GREENTEA_SETUP(20, "default_auto");
 
 #ifdef DEVICE_SEMIHOST
-	// Disconnect semihosting now, because otherwise it will get disconnected on the first sleep call and
-	// cause said call to take several milliseconds, leading to a test failure.
-	mbed_interface_disconnect();
+    // Disconnect semihosting now, because otherwise it will get disconnected on the first sleep call and
+    // cause said call to take several milliseconds, leading to a test failure.
+    mbed_interface_disconnect();
 #endif
 
     return greentea_test_setup_handler(number_of_cases);
diff --git a/rtos/tests/TESTS/mbed_rtos/mail/main.cpp b/rtos/tests/TESTS/mbed_rtos/mail/main.cpp
index d7ba68f3df..32a1583b7c 100644
--- a/rtos/tests/TESTS/mbed_rtos/mail/main.cpp
+++ b/rtos/tests/TESTS/mbed_rtos/mail/main.cpp
@@ -480,9 +480,9 @@ utest::v1::status_t test_setup(const size_t number_of_cases)
     GREENTEA_SETUP(10, "default_auto");
 
 #ifdef DEVICE_SEMIHOST
-	// Disconnect semihosting now, because otherwise it will get disconnected on the first sleep call and
-	// cause said call to take several milliseconds, leading to a test failure.
-	mbed_interface_disconnect();
+    // Disconnect semihosting now, because otherwise it will get disconnected on the first sleep call and
+    // cause said call to take several milliseconds, leading to a test failure.
+    mbed_interface_disconnect();
 #endif
 
     return verbose_test_setup_handler(number_of_cases);
diff --git a/rtos/tests/TESTS/mbed_rtos/queue/main.cpp b/rtos/tests/TESTS/mbed_rtos/queue/main.cpp
index 6be21e1880..1ece5837d0 100644
--- a/rtos/tests/TESTS/mbed_rtos/queue/main.cpp
+++ b/rtos/tests/TESTS/mbed_rtos/queue/main.cpp
@@ -320,9 +320,9 @@ utest::v1::status_t test_setup(const size_t number_of_cases)
     GREENTEA_SETUP(5, "default_auto");
 
 #ifdef DEVICE_SEMIHOST
-	// Disconnect semihosting now, because otherwise it will get disconnected on the first sleep call and
-	// cause said call to take several milliseconds, leading to a test failure.
-	mbed_interface_disconnect();
+    // Disconnect semihosting now, because otherwise it will get disconnected on the first sleep call and
+    // cause said call to take several milliseconds, leading to a test failure.
+    mbed_interface_disconnect();
 #endif
 
     return verbose_test_setup_handler(number_of_cases);