diff --git a/src/external/stb_image.h b/src/external/stb_image.h
index accef4839..15f0a6581 100644
--- a/src/external/stb_image.h
+++ b/src/external/stb_image.h
@@ -688,6 +688,10 @@ typedef unsigned char validate_uint32[sizeof(stbi__uint32)==4 ? 1 : -1];
 #define STBI_NO_SIMD
 #endif
 
+#if defined(__TINYC__)
+  #define STBI_NO_SIMD
+#endif
+
 #if !defined(STBI_NO_SIMD) && (defined(STBI__X86_TARGET) || defined(STBI__X64_TARGET))
 #define STBI_SSE2
 #include <emmintrin.h>