diff --git a/engine/joint/v4k.h b/engine/joint/v4k.h
index 6392364..b44a678 100644
--- a/engine/joint/v4k.h
+++ b/engine/joint/v4k.h
@@ -17158,7 +17158,7 @@ API texture_t texture_from_mem(const void* ptr, int len, int flags);
 API texture_t texture_create(unsigned w, unsigned h, unsigned n, const void *pixels, int flags);
 API texture_t texture_checker();
 API void      texture_destroy(texture_t *t);
-API int       texture_unit(); // returns rolling counter
+API int       texture_unit(); // returns rolling counter up to GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS
 // textureLod(filename, dir, lod);
 // void texture_add_loader( int(*loader)(const char *filename, int *w, int *h, int *bpp, int reqbpp, int flags) );
 API unsigned  texture_update(texture_t *t, unsigned w, unsigned h, unsigned n, const void *pixels, int flags);
diff --git a/engine/split/v4k_render.h b/engine/split/v4k_render.h
index 292d165..d11dfa1 100644
--- a/engine/split/v4k_render.h
+++ b/engine/split/v4k_render.h
@@ -136,7 +136,7 @@ API texture_t texture_from_mem(const void* ptr, int len, int flags);
 API texture_t texture_create(unsigned w, unsigned h, unsigned n, const void *pixels, int flags);
 API texture_t texture_checker();
 API void      texture_destroy(texture_t *t);
-API int       texture_unit(); // returns rolling counter
+API int       texture_unit(); // returns rolling counter up to GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS
 // textureLod(filename, dir, lod);
 // void texture_add_loader( int(*loader)(const char *filename, int *w, int *h, int *bpp, int reqbpp, int flags) );
 API unsigned  texture_update(texture_t *t, unsigned w, unsigned h, unsigned n, const void *pixels, int flags);
diff --git a/engine/v4k.h b/engine/v4k.h
index cbdb401..b15c41f 100644
--- a/engine/v4k.h
+++ b/engine/v4k.h
@@ -3225,7 +3225,7 @@ API texture_t texture_from_mem(const void* ptr, int len, int flags);
 API texture_t texture_create(unsigned w, unsigned h, unsigned n, const void *pixels, int flags);
 API texture_t texture_checker();
 API void      texture_destroy(texture_t *t);
-API int       texture_unit(); // returns rolling counter
+API int       texture_unit(); // returns rolling counter up to GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS
 // textureLod(filename, dir, lod);
 // void texture_add_loader( int(*loader)(const char *filename, int *w, int *h, int *bpp, int reqbpp, int flags) );
 API unsigned  texture_update(texture_t *t, unsigned w, unsigned h, unsigned n, const void *pixels, int flags);