diff --git a/libc/stdio/fread.c b/libc/stdio/fread.c
index f3f0127..7b858ae 100644
--- a/libc/stdio/fread.c
+++ b/libc/stdio/fread.c
@@ -41,7 +41,7 @@
 #define MUL_NO_OVERFLOW	(1UL << (sizeof(size_t) * 4))
 
 size_t
-fread(void *buf, size_t size, size_t count, FILE *fp)
+fread(void *buf, size_t size, size_t count, FILE *fp) __overloadable
 {
 	/*
 	 * Extension:  Catch integer overflow.