diff --git a/stb_image_write.h b/stb_image_write.h
index f1a1773..d7ed1d3 100644
--- a/stb_image_write.h
+++ b/stb_image_write.h
@@ -167,9 +167,9 @@ LICENSE
 #endif
 
 #ifndef STB_IMAGE_WRITE_STATIC  // C++ forbids static forward declarations
-extern int stbi_write_tga_with_rle;
-extern int stbi_write_png_compression_level;
-extern int stbi_write_force_png_filter;
+STBIWDEF int stbi_write_tga_with_rle;
+STBIWDEF int stbi_write_png_compression_level;
+STBIWDEF int stbi_write_force_png_filter;
 #endif
 
 #ifndef STBI_WRITE_NO_STDIO