diff --git a/4ed_system.h b/4ed_system.h
index 9984657c..4a850f8c 100644
--- a/4ed_system.h
+++ b/4ed_system.h
@@ -208,11 +208,6 @@ typedef Sys_Memory_Set_Protection_Sig(System_Memory_Set_Protection);
 typedef Sys_Memory_Free_Sig(System_Memory_Free);
 
 // file system
-
-// TODO(allen): eliminate
-#define Sys_Directory_CD_Sig(name) b32 name(char *dir, i32 *len, i32 cap, char *rel_path, i32 rel_len)
-typedef Sys_Directory_CD_Sig(System_Directory_CD);
-
 #define Sys_Get_Current_Path_Sig(name) i32 name(char *out, i32 capacity)
 typedef Sys_Get_Current_Path_Sig(System_Get_Current_Path);
 
@@ -286,8 +281,6 @@ struct System_Functions{
     System_Memory_Set_Protection  *memory_set_protection;
     System_Memory_Free            *memory_free;
     
-    // TODO(allen): eliminate
-    System_Directory_CD           *directory_cd;
     System_Get_Current_Path       *get_current_path;
     System_Get_4ed_Path           *get_4ed_path;
     
diff --git a/platform_all/4ed_link_system_functions.cpp b/platform_all/4ed_link_system_functions.cpp
index 0782fca3..471a283f 100644
--- a/platform_all/4ed_link_system_functions.cpp
+++ b/platform_all/4ed_link_system_functions.cpp
@@ -57,8 +57,6 @@ link_system_code(){
     SYSLINK(memory_set_protection);
     SYSLINK(memory_free);
     
-    // TODO(allen): eliminate
-    SYSLINK(directory_cd);
     SYSLINK(get_current_path);
     SYSLINK(get_4ed_path);
     
diff --git a/platform_all/4ed_shared_file_handling.cpp b/platform_all/4ed_shared_file_handling.cpp
index 25994f89..715d8df9 100644
--- a/platform_all/4ed_shared_file_handling.cpp
+++ b/platform_all/4ed_shared_file_handling.cpp
@@ -9,42 +9,7 @@
 
 // TOP
 
-// TODO(allen): eliminate
-internal
-Sys_Directory_CD_Sig(system_directory_cd){
-    String directory = make_string_cap(dir, *len, cap);
-    b32 result = false;
-    
-    if (rel_path[0] != 0){
-        if (rel_path[0] == '.' && rel_path[1] == 0){
-            result = true;
-        }
-        else if (rel_path[0] == '.' && rel_path[1] == '.' && rel_path[2] == 0){
-            result = remove_last_folder(&directory);
-            terminate_with_null(&directory);
-        }
-        else{
-            if (directory.size + rel_len + 1 > directory.memory_size){
-                i32 old_size = directory.size;
-                append_partial_sc(&directory, rel_path);
-                append_s_char(&directory, SLASH);
-                terminate_with_null(&directory);
-                
-                if (system_directory_exists(directory.str)){
-                    result = true;
-                }
-                else{
-                    directory.size = old_size;
-                }
-            }
-        }
-    }
-    
-    *len = directory.size;
-    LOGF("%.*s: %d\n", directory.size, directory.str, result);
-    
-    return(result);
-}
+#error Eliminate this file
 
 // BOTTOM
 
diff --git a/platform_linux/linux_4ed.cpp b/platform_linux/linux_4ed.cpp
index 7e9b7b03..c9027f63 100644
--- a/platform_linux/linux_4ed.cpp
+++ b/platform_linux/linux_4ed.cpp
@@ -249,8 +249,6 @@ Sys_Now_Time_Sig(system_now_time){
     return(result);
 }
 
-#include "4ed_shared_file_handling.cpp"
-
 ////////////////////////////////
 
 internal void
diff --git a/platform_mac/mac_4ed.cpp b/platform_mac/mac_4ed.cpp
index b6de3ced..3c5f3a77 100644
--- a/platform_mac/mac_4ed.cpp
+++ b/platform_mac/mac_4ed.cpp
@@ -158,8 +158,6 @@ Sys_Now_Time_Sig(system_now_time){
     return(result);
 }
 
-#include "4ed_shared_file_handling.cpp"
-
 ////////////////////////////////
 
 void
diff --git a/platform_win32/win32_4ed.cpp b/platform_win32/win32_4ed.cpp
index 2e96a2fe..35fe6408 100644
--- a/platform_win32/win32_4ed.cpp
+++ b/platform_win32/win32_4ed.cpp
@@ -314,7 +314,6 @@ handle_type_ptr(void *ptr){
 ////////////////////////////////
 
 #include "win32_4ed_functions.cpp"
-#include "4ed_shared_file_handling.cpp"
 
 ////////////////////////////////