diff --git a/others/planck.c b/others/planck.c
index 107309b..8b56f7a 100644
--- a/others/planck.c
+++ b/others/planck.c
@@ -175,8 +175,6 @@ defbinary(")", shr, >>, uintptr_t)
 defbinary("%", sar, >>, intptr_t)
 
 /* File IO */
-#define SUCCESS 0
-#define ALLOCATE_ERROR      -59
 defcode("(open)", openfile) {
     int flags = pop();
     char *name = (char*) pop();
diff --git a/others/planck.py b/others/planck.py
index d3e9000..cb00cc0 100644
--- a/others/planck.py
+++ b/others/planck.py
@@ -249,12 +249,6 @@ def argv():
 add_simple_operator('v', argv)
 add_simple_operator('V', lambda: push(VERSION_ADDR))
 
-SUCCESS = 0
-ALLOCATE_ERROR = -59
-CLOSE_FILE_ERROR = -62
-OPEN_FILE_ERROR = -69
-READ_FILE_ERROR = -70
-WRITE_FILE_ERROR = -75
 def openfile():
     flag = pop()
     name = read_string(pop())