diff --git a/ps4/src/symbols.c b/ps4/src/symbols.c
index 2758762..ae9c5d3 100644
--- a/ps4/src/symbols.c
+++ b/ps4/src/symbols.c
@@ -225,17 +225,12 @@ static size_t string_list_capacity;
 // Takes ownership of the string, and returns its position in the string list.
 static size_t add_string(char* string)
 {
-  // TODO: Write a helper function you can use during bind_names(),
-  // to easily add a string into the dynamically growing string_list.
-
-  // The length of the string list should be stored in string_list_len.
-
-  // The variable string_list_capacity should contain the maximum number of char*
-  // that can fit in the current string_list before we need to allocate a larger array.
-  // If length is about to surpass capacity, create a larger allocation first.
-  // Tip: See the realloc function from the standard library
-
-  // Return the position the added string gets in the list.
+  if (string_list_len >= string_list_capacity) {
+    string_list_capacity = string_list_capacity * 2 + 8;
+    string_list = realloc(string_list, string_list_capacity * sizeof(char*));
+  }
+  string_list[string_list_len] = string;  // takes ownership
+  return string_list_len++;
 }
 
 // Prints all strings added to the global string list