diff --git a/tests/chapter_17/valid/void_pointer/common_pointer_type.c b/tests/chapter_17/valid/void_pointer/common_pointer_type.c
index 1a06e35d..c119e340 100644
--- a/tests/chapter_17/valid/void_pointer/common_pointer_type.c
+++ b/tests/chapter_17/valid/void_pointer/common_pointer_type.c
@@ -34,7 +34,7 @@ int main(void) {
     // note: effective type of this object is unsigned int,
     // so we're allowed to access it with an expression of
     // the corresponding signed type, int.
-    // if this object were void_ptr instead of array, this would be udnefined
+    // if this object were void_ptr instead of array, this would be undefined
     int array_element = my_array[1];
 
     if (array_element != 2) {
diff --git a/tests/chapter_17/valid/void_pointer/memory_management_functions.c b/tests/chapter_17/valid/void_pointer/memory_management_functions.c
index 81342a2e..6da15981 100644
--- a/tests/chapter_17/valid/void_pointer/memory_management_functions.c
+++ b/tests/chapter_17/valid/void_pointer/memory_management_functions.c
@@ -49,7 +49,7 @@ int main(void) {
     }
     free(double_buffer);
 
-    // allocate a buffer with aligned_alloc, make sure it has the correct alignemnt
+    // allocate a buffer with aligned_alloc, make sure it has the correct alignment
     char_buffer = aligned_alloc(256, 256);
     // make sure it's 256 byte-aligned
     if ((unsigned long) char_buffer % 256) {