diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index d34b2e2..fca87ab 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -1,5 +1,11 @@
 {
     "name": "devkitPPC",
     "image": "devkitpro/devkitppc:latest",
-    "extensions": ["ms-vscode.cpptools"]
+    "customizations": {
+        "vscode": {
+            "extensions": [
+                "ms-vscode.cpptools"
+            ]
+        }
+    }
 }
diff --git a/GRRLIB/GRRLIB/GRRLIB_print.c b/GRRLIB/GRRLIB/GRRLIB_print.c
index 73b8bff..fb7f86c 100644
--- a/GRRLIB/GRRLIB/GRRLIB_print.c
+++ b/GRRLIB/GRRLIB/GRRLIB_print.c
@@ -1,5 +1,5 @@
 /*------------------------------------------------------------------------------
-Copyright (c) 2009-2019 The GRRLIB Team
+Copyright (c) 2009-2023 The GRRLIB Team
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -43,16 +43,15 @@ void  GRRLIB_Printf (const f32 xpos, const f32 ypos,
         return;
     }
 
-    int i, size;
     char tmp[1024];
     f32 offset = tex->tilew * zoom;
 
     va_list argp;
     va_start(argp, text);
-    size = vsnprintf(tmp, sizeof(tmp), text, argp);
+    const int size = vsnprintf(tmp, sizeof(tmp), text, argp);
     va_end(argp);
 
-    for (i = 0; i < size; i++) {
+    for (int i = 0; i < size; i++) {
         GRRLIB_DrawTile(xpos+i*offset, ypos, tex, 0, zoom, zoom, color,
             tmp[i] - tex->tilestart);
     }
@@ -70,22 +69,20 @@ void  GRRLIB_Printf (const f32 xpos, const f32 ypos,
 void  GRRLIB_PrintBMF (const f32 xpos, const f32 ypos,
                        const GRRLIB_bytemapFont *bmf,
                        const char *text, ...) {
-    u32   i, size;
-    u8    x, y;
     char  tmp[1024];
     f32   xoff = xpos;
     const GRRLIB_bytemapChar *pchar;
 
     va_list argp;
     va_start(argp, text);
-    size = vsnprintf(tmp, sizeof(tmp), text, argp);
+    const u32 size = vsnprintf(tmp, sizeof(tmp), text, argp);
     va_end(argp);
 
-    for (i=0; i<size; i++) {
+    for (u32 i = 0; i < size; i++) {
         pchar = &bmf->charDef[(u8)tmp[i]];
         u8 *pdata = pchar->data;
-        for (y=0; y<pchar->height; y++) {
-            for (x=0; x<pchar->width; x++) {
+        for (u8 y = 0; y<pchar->height; y++) {
+            for (u8 x = 0; x<pchar->width; x++) {
                 if (*pdata) {
                     GRRLIB_Plot(xoff + x + pchar->relx,
                                 ypos + y + pchar->rely,
diff --git a/GRRLIB/GRRLIB/GRRLIB_ttf.c b/GRRLIB/GRRLIB/GRRLIB_ttf.c
index 06b71f7..78747ce 100644
--- a/GRRLIB/GRRLIB/GRRLIB_ttf.c
+++ b/GRRLIB/GRRLIB/GRRLIB_ttf.c
@@ -1,5 +1,5 @@
 /*------------------------------------------------------------------------------
-Copyright (c) 2009-2020 The GRRLIB Team
+Copyright (c) 2009-2023 The GRRLIB Team
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -133,7 +133,9 @@ void GRRLIB_PrintfTTFW(int x, int y, GRRLIB_ttfFont *myFont, const wchar_t *utf3
     FT_GlyphSlot slot = Face->glyph;
     FT_UInt glyphIndex;
     FT_UInt previousGlyph = 0;
-    u8 cR = R(color), cG = G(color), cB = B(color);
+    const u8 cR = R(color);
+    const u8 cG = G(color);
+    const u8 cB = B(color);
 
     if (FT_Set_Pixel_Sizes(Face, 0, fontSize) != 0) {
         FT_Set_Pixel_Sizes(Face, 0, 12);