diff --git a/zilti/packages/zig.scm b/zilti/packages/zig.scm
index 83b8eff..6386cc7 100644
--- a/zilti/packages/zig.scm
+++ b/zilti/packages/zig.scm
@@ -47,7 +47,7 @@
        ((#:parallel-build? _ #f) #t)
        ((#:configure-flags flags ''())
         #~(cons* (string-append "-DCMAKE_PREFIX_PATH="
-                                (file-append llvm-16 ""))
+                                #$(file-append llvm-16 ""))
                  #$flags))))
     (inputs
      (modify-inputs (package-inputs zig-0.10)