diff --git a/src/include/stdio.h b/src/include/stdio.h
index c56b8d3..e7a5358 100644
--- a/src/include/stdio.h
+++ b/src/include/stdio.h
@@ -7,6 +7,8 @@
 
 #include <stdlib.h>
 
+#define EOF (-1)
+
 FILE* fopen(const char *restrict pathname, const char *restrict mode);
 int fclose(FILE *stream);
 int fgetc(FILE *stream);