1 files changed, 2 insertions, 1 deletions
diff --git a/io.c b/io.c
index f56ed79f73..0d604a9fe3 100644
--- a/io.c
+++ b/io.c
@@ -787,7 +787,8 @@ rb_io_set_lineno(io, lineno)
 
     GetOpenFile(io, fptr);
     rb_io_check_readable(fptr);
-    return fptr->lineno = NUM2INT(lineno);
+    fptr->lineno = NUM2INT(lineno);
+    return lineno;
 }
 
 static void