diff --git a/test/nil/configuration.xml b/test/nil/configuration.xml
index 92334ab50..e937cf016 100644
--- a/test/nil/configuration.xml
+++ b/test/nil/configuration.xml
@@ -352,7 +352,7 @@ while (time == chVTGetSystemTimeX()) {
                 <steps>
                   <step>
                     <description>
-                      <value>Checking case where start == end, it must always evaluate as in range.</value>
+                      <value>Checking case where start == end, it must always evaluate as not in range.</value>
                     </description>
                     <tags>
                       <value />
@@ -362,13 +362,13 @@ while (time == chVTGetSystemTimeX()) {
 bool b;
 
 b = chTimeIsInRangeX((systime_t)0, (systime_t)0, (systime_t)0);
-test_assert(b == true, "not in range");
+test_assert(b == false, "in range");
 b = chTimeIsInRangeX((systime_t)-1, (systime_t)0, (systime_t)0);
-test_assert(b == true, "not in range");
+test_assert(b == false, "in range");
 b = chTimeIsInRangeX((systime_t)0, (systime_t)-1, (systime_t)-1);
-test_assert(b == true, "not in range");
+test_assert(b == false, "in range");
 b = chTimeIsInRangeX((systime_t)-1, (systime_t)-1, (systime_t)-1);
-test_assert(b == true, "not in range");
+test_assert(b == false, "in range");
 ]]></value>
                     </code>
                   </step>
diff --git a/test/nil/source/test/nil_test_sequence_002.c b/test/nil/source/test/nil_test_sequence_002.c
index 0a8188d88..6844c0527 100644
--- a/test/nil/source/test/nil_test_sequence_002.c
+++ b/test/nil/source/test/nil_test_sequence_002.c
@@ -85,7 +85,7 @@ static const testcase_t nil_test_002_001 = {
  *
  * <h2>Test Steps</h2>
  * - [2.2.1] Checking case where start == end, it must always evaluate
- *   as in range.
+ *   as not in range.
  * - [2.2.2] Checking boundaries for start < end.
  * - [2.2.3] Checking boundaries for start > end.
  * .
@@ -94,19 +94,19 @@ static const testcase_t nil_test_002_001 = {
 static void nil_test_002_002_execute(void) {
 
   /* [2.2.1] Checking case where start == end, it must always evaluate
-     as in range.*/
+     as not in range.*/
   test_set_step(1);
   {
     bool b;
 
     b = chTimeIsInRangeX((systime_t)0, (systime_t)0, (systime_t)0);
-    test_assert(b == true, "not in range");
+    test_assert(b == false, "in range");
     b = chTimeIsInRangeX((systime_t)-1, (systime_t)0, (systime_t)0);
-    test_assert(b == true, "not in range");
+    test_assert(b == false, "in range");
     b = chTimeIsInRangeX((systime_t)0, (systime_t)-1, (systime_t)-1);
-    test_assert(b == true, "not in range");
+    test_assert(b == false, "in range");
     b = chTimeIsInRangeX((systime_t)-1, (systime_t)-1, (systime_t)-1);
-    test_assert(b == true, "not in range");
+    test_assert(b == false, "in range");
   }
   test_end_step(1);
 
diff --git a/test/rt/configuration.xml b/test/rt/configuration.xml
index a7051a75d..86d560223 100644
--- a/test/rt/configuration.xml
+++ b/test/rt/configuration.xml
@@ -717,7 +717,7 @@ while (time == chVTGetSystemTimeX()) {
                 <steps>
                   <step>
                     <description>
-                      <value>Checking case where start == end, it must always evaluate as in range.</value>
+                      <value>Checking case where start == end, it must always evaluate as not in range.</value>
                     </description>
                     <tags>
                       <value />
@@ -727,13 +727,13 @@ while (time == chVTGetSystemTimeX()) {
 bool b;
 
 b = chTimeIsInRangeX((systime_t)0, (systime_t)0, (systime_t)0);
-test_assert(b == true, "not in range");
+test_assert(b == false, "in range");
 b = chTimeIsInRangeX((systime_t)-1, (systime_t)0, (systime_t)0);
-test_assert(b == true, "not in range");
+test_assert(b == false, "in range");
 b = chTimeIsInRangeX((systime_t)0, (systime_t)-1, (systime_t)-1);
-test_assert(b == true, "not in range");
+test_assert(b == false, "in range");
 b = chTimeIsInRangeX((systime_t)-1, (systime_t)-1, (systime_t)-1);
-test_assert(b == true, "not in range");
+test_assert(b == false, "in range");
 ]]></value>
                     </code>
                   </step>
diff --git a/test/rt/source/test/rt_test_sequence_003.c b/test/rt/source/test/rt_test_sequence_003.c
index 98404f55c..4f365c705 100644
--- a/test/rt/source/test/rt_test_sequence_003.c
+++ b/test/rt/source/test/rt_test_sequence_003.c
@@ -85,7 +85,7 @@ static const testcase_t rt_test_003_001 = {
  *
  * <h2>Test Steps</h2>
  * - [3.2.1] Checking case where start == end, it must always evaluate
- *   as in range.
+ *   as not in range.
  * - [3.2.2] Checking boundaries for start < end.
  * - [3.2.3] Checking boundaries for start > end.
  * .
@@ -94,19 +94,19 @@ static const testcase_t rt_test_003_001 = {
 static void rt_test_003_002_execute(void) {
 
   /* [3.2.1] Checking case where start == end, it must always evaluate
-     as in range.*/
+     as not in range.*/
   test_set_step(1);
   {
     bool b;
 
     b = chTimeIsInRangeX((systime_t)0, (systime_t)0, (systime_t)0);
-    test_assert(b == true, "not in range");
+    test_assert(b == false, "in range");
     b = chTimeIsInRangeX((systime_t)-1, (systime_t)0, (systime_t)0);
-    test_assert(b == true, "not in range");
+    test_assert(b == false, "in range");
     b = chTimeIsInRangeX((systime_t)0, (systime_t)-1, (systime_t)-1);
-    test_assert(b == true, "not in range");
+    test_assert(b == false, "in range");
     b = chTimeIsInRangeX((systime_t)-1, (systime_t)-1, (systime_t)-1);
-    test_assert(b == true, "not in range");
+    test_assert(b == false, "in range");
   }
   test_end_step(1);