diff --git a/lib/compiler/Maker.zig b/lib/compiler/Maker.zig
index 3636c26fd720f70616ea0683f73bdabcb9fa9177..cd3e43d332b2acb21ac76a8828d9426aba9a60d5 100644
--- a/lib/compiler/Maker.zig
+++ b/lib/compiler/Maker.zig
@@ -1843,10 +1843,10 @@ pub fn relativePath(maker: *const Maker, arena: Allocator, relative: Configurati
             .root_dir = graph.zig_lib_directory,
             .sub_path = sub_path,
         },
-        .install_prefix => maker.install_paths.prefix,
-        .install_lib => maker.install_paths.lib,
-        .install_bin => maker.install_paths.bin,
-        .install_include => maker.install_paths.include,
+        .install_prefix => try maker.install_paths.prefix.join(arena, sub_path),
+        .install_lib => try maker.install_paths.lib.join(arena, sub_path),
+        .install_bin => try maker.install_paths.bin.join(arena, sub_path),
+        .install_include => try maker.install_paths.include.join(arena, sub_path),
     };
 }