diff --git a/ext/nio4r/bytebuffer.c b/ext/nio4r/bytebuffer.c
index 99e34f2..9e7ac4a 100644
--- a/ext/nio4r/bytebuffer.c
+++ b/ext/nio4r/bytebuffer.c
@@ -337,7 +337,7 @@ static VALUE NIO_ByteBuffer_read_from(VALUE self, VALUE io)
         if (errno == EAGAIN) {
             return INT2NUM(0);
         } else {
-            rb_sys_fail("write");
+            rb_sys_fail("read");
         }
     }