diff --git a/include/tex3ds.h b/include/tex3ds.h
index 26d7444..18a1363 100644
--- a/include/tex3ds.h
+++ b/include/tex3ds.h
@@ -110,7 +110,7 @@ Tex3DS_Texture Tex3DS_TextureImportStdio(FILE* fp, C3D_Tex* tex, C3D_TexCube* te
  *  @param[in] texture Tex3DS texture
  *  @returns Number of subtextures
  */
-const size_t Tex3DS_GetNumSubTextures(const Tex3DS_Texture texture);
+size_t Tex3DS_GetNumSubTextures(const Tex3DS_Texture texture);
 
 /** @brief Get subtexture
  *  @param[in] texture Tex3DS texture
diff --git a/source/tex3ds.c b/source/tex3ds.c
index d3b8696..bcea3f0 100644
--- a/source/tex3ds.c
+++ b/source/tex3ds.c
@@ -221,7 +221,7 @@ Tex3DS_TextureImportStdio(FILE* fp, C3D_Tex* tex, C3D_TexCube* texcube, bool vra
 	return Tex3DSi_ImportCommon(tex, texcube, vram, decompressCallback_Stdio, fp, 0);
 }
 
-const size_t
+size_t
 Tex3DS_GetNumSubTextures(const Tex3DS_Texture texture)
 {
 	return texture->numSubTextures;