diff --git a/userprog/argument_parsing.h b/userprog/argument_parsing.h
index 78f4e0eca38b95a4c16e3963d9944105bc1906ef..495f63428e5376880309167d5bd964651378772f 100644
--- a/userprog/argument_parsing.h
+++ b/userprog/argument_parsing.h
@@ -13,9 +13,10 @@ int parse_arguments(const char* command_line, char***argv);
 /*
  * Given stack pointer `esp`, argument count `argc` and arguments array `argv`,
  * Populates the stack pointed to by the stack pointer with the given arguments.
- * TODO: clarify what, if anything, `esp` stands for and rename it to something
- * clearer if possible.
+ * esp is the initial stack pointer from process.c,
+ * I have used stackPointer as the name as that makes sense inside populate_stack,
+ * In process.c esp has been renamed to initialStackPointer
  */
-void populate_stack(void* esp, int argc, char** argv);
+void populate_stack(void* stackPointer, int argc, char** argv);
 
 #endif /* userprog/argument_parsing.h */