diff --git a/tests/stb_png_read_fuzzer.c b/tests/stb_png_read_fuzzer.c
index 97c9083..fc5d8e9 100644
--- a/tests/stb_png_read_fuzzer.c
+++ b/tests/stb_png_read_fuzzer.c
@@ -1,5 +1,5 @@
 #define STB_IMAGE_IMPLEMENTATION
-#define STBI_ONLY_PNG
+
 #include "../stb_image.h"
 
 int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)