diff --git a/fxgxa/icon.c b/fxgxa/icon.c
index d0162f9..ba99bec 100644
--- a/fxgxa/icon.c
+++ b/fxgxa/icon.c
@@ -2,6 +2,7 @@
 #include <string.h>
 #include <fxgxa.h>
 #include <png.h>
+#include <endianness.h>
 
 uint8_t *icon_load(const char *filename, int *width, int *height)
 {