diff --git a/IMG_qoi.c b/IMG_qoi.c
index 4a9e93c..d93959e 100644
--- a/IMG_qoi.c
+++ b/IMG_qoi.c
@@ -25,64 +25,12 @@
 
 #include "SDL_image.h"
 
-#define LOAD_QOI
-
 #ifdef LOAD_QOI
 
-/* Replace C runtime functions with SDL C runtime functions for building on Windows */
-#if defined(__WATCOMC__) && defined(HAVE_LIBC)
-  /* With SDL math functions, Watcom builds are very much broken. */
-#define acosf(x)    (float)acos((double)(x))
-#define atan2f(x,y) (float)atan2((double)(x),(double)(y))
-#define cosf(x)     (float)cos((double)(x))
-#define ceilf(x)    (float)ceil((double)(x))
-#define fabsf(x)    (float)fabs((double)(x))
-#define floorf(x)   (float)floor((double)(x))
-#define fmodf(x,y)  (float)fmod((double)(x),(double)(y))
-#define sinf(x)     (float)sin((double)(x))
-#define sqrtf(x)    (float)sqrt((double)(x))
-#define tanf(x)     (float)tan((double)(x))
-#else
-#define acosf   SDL_acosf
-#define atan2f  SDL_atan2f
-#define cosf    SDL_cosf
-#define ceilf   SDL_ceilf
-#define fabs    SDL_fabs
-#define fabsf   SDL_fabsf
-#define floorf  SDL_floorf
-#define fmodf   SDL_fmodf
-#define pow     SDL_pow
-#define sinf    SDL_sinf
-#define sqrt    SDL_sqrt
-#define sqrtf   SDL_sqrtf
-#define tanf    SDL_tanf
-#endif
-#define free    SDL_free
-#define malloc  SDL_malloc
-#undef memcpy
-#define memcpy  SDL_memcpy
-#undef memset
-#define memset  SDL_memset
-#define qsort   SDL_qsort
-#define realloc SDL_realloc
-#define sscanf  SDL_sscanf
-#undef strchr
-#define strchr  SDL_strchr
-#undef strcmp
-#define strcmp  SDL_strcmp
-#undef strncmp
-#define strncmp SDL_strncmp
-#undef strncpy
-#define strncpy SDL_strlcpy
-#define strlen  SDL_strlen
-#define strstr  SDL_strstr
-#define strtol  SDL_strtol
-#define strtoll SDL_strtoll
-#ifndef FLT_MAX
-#define FLT_MAX     3.402823466e+38F
-#endif
-#undef HAVE_STDIO_H
+#define QOI_MALLOC(sz) SDL_malloc(sz)
+#define QOI_FREE(p)    SDL_free(p)
 
+#define QOI_NO_STDIO
 #define QOI_IMPLEMENTATION
 #include "qoi.h"