diff --git a/include/sys/lua/luaconf.h b/include/sys/lua/luaconf.h
index ce99f339fe..83202d71c2 100644
--- a/include/sys/lua/luaconf.h
+++ b/include/sys/lua/luaconf.h
@@ -368,11 +368,7 @@ extern int lcompat_hashnum(int64_t);
 @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
 ** CHANGE it if it uses too much C-stack space.
 */
-#ifdef __linux__
 #define LUAL_BUFFERSIZE		512
-#else
-#define LUAL_BUFFERSIZE		1024
-#endif
 
 
 /*
diff --git a/module/lua/llimits.h b/module/lua/llimits.h
index 25466f14ed..177092fbc2 100644
--- a/module/lua/llimits.h
+++ b/module/lua/llimits.h
@@ -126,16 +126,7 @@ typedef LUAI_UACNUMBER l_uacNumber;
  * Minimum amount of available stack space (in bytes) to make a C call.  With
  * gsub() recursion, the stack space between each luaD_call() is 1256 bytes.
  */
-#if defined(__FreeBSD__)
-/*
- * FreeBSD needs a few extra bytes in unoptimized debug builds to avoid a
- * double-fault handling the error when the max call depth is exceeded just
- * before the C stack runs out.  64 bytes seems to do the trick.
- */
-#define LUAI_MINCSTACK		4160
-#else
 #define LUAI_MINCSTACK		4096
-#endif
 
 /*
 ** maximum number of upvalues in a closure (both C and Lua). (Value