diff --git a/std/os.zig b/std/os.zig
index 2caab634d66b4b495c9270cbcb3b5e38e234daee..c2010bf6a95b6df6dafcd3591d67d3f5ad9a32b9 100644
--- a/std/os.zig
+++ b/std/os.zig
@@ -134,7 +134,7 @@ fn getRandomBytesDevURandom(buf: []u8) !void {
     defer close(fd);
 
     const st = try fstat(fd);
-    if (!system.S_ISCHR(st.mode)) {
+    if (!S_ISCHR(st.mode)) {
         return error.NoDevice;
     }