diff --git a/tests/pthread_tls/main.c b/tests/pthread_tls/main.c
index 0ed46848a5..8ab829f338 100644
--- a/tests/pthread_tls/main.c
+++ b/tests/pthread_tls/main.c
@@ -30,7 +30,7 @@ void *run(void *parameter)
 
     (void)parameter;
 
-    printf("\n-= TEST 1 - create %d tls with sequencial values 0...%d =-\n",
+    printf("\n-= TEST 1 - create %d tls with sequential values 0...%d =-\n",
            NUMBER_OF_TLS, NUMBER_OF_TLS - 1);
 
     for (int i = 0; i < NUMBER_OF_TLS; ++i) {
@@ -39,7 +39,7 @@ void *run(void *parameter)
         pthread_setspecific(aKeys[i], &aTLS_values[i]);
     }
 
-    printf("now rise sequencial by one values 1...%d\n", NUMBER_OF_TLS);
+    printf("now rise sequential by one values 1...%d\n", NUMBER_OF_TLS);
 
     for (int i = 0; i < NUMBER_OF_TLS; ++i) {
         aTLS_values[i]++;
diff --git a/tests/pthread_tls/tests/01-run.py b/tests/pthread_tls/tests/01-run.py
index c256dbfc2e..9d609d1546 100755
--- a/tests/pthread_tls/tests/01-run.py
+++ b/tests/pthread_tls/tests/01-run.py
@@ -14,7 +14,7 @@ def _check_test_output(child):
 
 def testfunc(child):
     child.expect('START')
-    child.expect('-= TEST 1 - create 20 tls with sequencial values 0...19 =-')
+    child.expect('-= TEST 1 - create 20 tls with sequential values 0...19 =-')
     _check_test_output(child)
     child.expect('-= TEST 2 - '
                  r'delete deliberate key \(key\[5\]:-?\d+\) =-')