diff --git a/polymer/eduke32/build/include/lunatic.h b/polymer/eduke32/build/include/lunatic.h
index 1b7fd3b7f..d2c9b71a2 100644
--- a/polymer/eduke32/build/include/lunatic.h
+++ b/polymer/eduke32/build/include/lunatic.h
@@ -40,7 +40,7 @@ extern void (*L_OutOfMemFunc)(void);
 int L_CreateState(L_State *estate, const char *name, void (*StateSetupFunc)(lua_State *));
 void L_DestroyState(L_State *estate);
 int L_RunOnce(L_State *estate, const char *fn);
-int L_RunString(L_State *estate, char *buf, int dofreebuf, int size, const char *name);
+int L_RunString(L_State *estate, char const *buf, int size, const char *name);
 
 static inline int L_IsInitialized(const L_State *estate) { return (estate->L != NULL); }
 
diff --git a/polymer/eduke32/build/src/engine.c b/polymer/eduke32/build/src/engine.c
index 451b8b698..a532d2583 100644
--- a/polymer/eduke32/build/src/engine.c
+++ b/polymer/eduke32/build/src/engine.c
@@ -9168,7 +9168,7 @@ int32_t initengine(void)
     {
         char *luastr = "_LUNATIC_AUX=true; decl=require('ffi').cdef; require'defs_common'";
 
-        if (L_RunString(&g_engState, luastr, 0, -1, "eng"))
+        if (L_RunString(&g_engState, luastr, -1, "eng"))
             return E_FatalError("Failed setting up engine Lua state");
     }
 #endif
diff --git a/polymer/eduke32/build/src/lunatic.c b/polymer/eduke32/build/src/lunatic.c
index 4a90c4299..e609f8869 100644
--- a/polymer/eduke32/build/src/lunatic.c
+++ b/polymer/eduke32/build/src/lunatic.c
@@ -187,7 +187,7 @@ static void L_ErrorPrint(const char *errmsg)
 
 // size < 0: length of <buf> is determined using strlen()
 // size >= 0: size given, for loading of LuaJIT bytecode
-int L_RunString(L_State *estate, char *buf, int dofreebuf, int size, const char *name)
+int L_RunString(L_State *estate, char const *buf, int size, const char *name)
 {
     int32_t i;
     lua_State *L = estate->L;
@@ -202,8 +202,6 @@ int L_RunString(L_State *estate, char *buf, int dofreebuf, int size, const char
     else
         i = luaL_loadbuffer(L, buf, size, name);
     Bassert(lua_gettop(L)==2);
-    if (dofreebuf)
-        Bfree(buf);
 
     if (i == LUA_ERRMEM)
         L_OutOfMemFunc();
@@ -243,5 +241,7 @@ int L_RunOnce(L_State *estate, const char *fn)
     if (i != 0)
         return i;
 
-    return L_RunString(estate, buf, 1, -1, fn);
+    int const retval = L_RunString(estate, buf, -1, fn);
+    Bfree(buf);
+    return retval;
 }
diff --git a/polymer/eduke32/source/astub.c b/polymer/eduke32/source/astub.c
index c7151eee4..b2ff0c50e 100644
--- a/polymer/eduke32/source/astub.c
+++ b/polymer/eduke32/source/astub.c
@@ -8908,7 +8908,7 @@ static int32_t osdcmd_lua(const osdfuncparm_t *parm)
         return OSDCMD_OK;
     }
 
-    ret = L_RunString(&g_EmState, (char *)parm->parms[0], 0, -1, "console");
+    ret = L_RunString(&g_EmState, parm->parms[0], -1, "console");
     if (ret != 0)
         OSD_Printf("Error running the Lua code (error code %d)\n", ret);
     else
@@ -9988,7 +9988,7 @@ int32_t ExtPostStartupWindow(void)
     {
         extern const char luaJIT_BC_defs_m32[];
 
-        int32_t i = L_RunString(&g_EmState, (char *)luaJIT_BC_defs_m32, 0,
+        int32_t i = L_RunString(&g_EmState, luaJIT_BC_defs_m32,
                                 LUNATIC_DEFS_M32_BC_SIZE, "defs_m32.ilua");
         if (i != 0)
         {
diff --git a/polymer/eduke32/source/game.c b/polymer/eduke32/source/game.c
index f2a279f55..d7538cf30 100644
--- a/polymer/eduke32/source/game.c
+++ b/polymer/eduke32/source/game.c
@@ -11049,7 +11049,7 @@ void El_CreateGameState(void)
     {
         extern const char luaJIT_BC_defs[];
 
-        if ((i = L_RunString(&g_ElState, (char *)luaJIT_BC_defs, 0,
+        if ((i = L_RunString(&g_ElState, luaJIT_BC_defs,
                              LUNATIC_DEFS_BC_SIZE, "defs.ilua")))
         {
             initprintf("Lunatic: Error preparing global ELua state (code %d)\n", i);
diff --git a/polymer/eduke32/source/osdcmds.c b/polymer/eduke32/source/osdcmds.c
index 40c0e7e58..c4ace2afd 100644
--- a/polymer/eduke32/source/osdcmds.c
+++ b/polymer/eduke32/source/osdcmds.c
@@ -698,7 +698,7 @@ static int32_t osdcmd_lua(const osdfuncparm_t *parm)
 
     // For the 'lua' OSD command, don't make errors appear on-screen:
     el_addNewErrors = 0;
-    ret = L_RunString(&g_ElState, (char *)parm->parms[0], 0, -1, "console");
+    ret = L_RunString(&g_ElState, parm->parms[0], -1, "console");
     el_addNewErrors = 1;
 
     if (ret != 0)