1 files changed, 1 insertions, 1 deletions
diff --git a/io.c b/io.c
index d9fd157446..bef54643f4 100644
--- a/io.c
+++ b/io.c
@@ -8500,7 +8500,7 @@ argf_to_io(VALUE argf)
 static VALUE
 argf_eof(VALUE argf)
 {
-    if (ARGF.current_file) {
+    if (RTEST(ARGF.current_file)) {
 	if (ARGF.init_p == 0) return Qtrue;
 	ARGF_FORWARD(0, 0);
 	if (rb_io_eof(ARGF.current_file)) {