diff --git a/src/fd.hpp b/src/fd.hpp
index 7cb343f..48ac48b 100644
--- a/src/fd.hpp
+++ b/src/fd.hpp
@@ -15,15 +15,11 @@ int with_stdin_at(int fd, F && what) {
 	quickscope_wrapper stdin_saved_deleter{[=] { close(stdin_saved); }};
 
 	dup2(fd, 0);
-
 	clearerr(stdin);
-	if(int ret = what()) {
-		dup2(stdin_saved, 0);
-		return ret;
-	}
+	int ret = what();
 
 	dup2(stdin_saved, 0);
-	return 0;
+	return ret;
 }
 
 /// with_len may not exceed pipe capacity (64k by default)