diff --git a/gnu/packages/java.scm b/gnu/packages/java.scm
index 26fc3ec..4273151 100644
--- a/gnu/packages/java.scm
+++ b/gnu/packages/java.scm
@@ -250,6 +250,11 @@ build process and its dependencies, whereas Make uses Makefile format.")
        ;; gremlin) doesn't support it yet, so skip this phase.
        #:validate-runpath? #f
 
+       #:modules ((guix build utils)
+                  (guix build gnu-build-system)
+                  (ice-9 popen)
+                  (ice-9 rdelim))
+
        #:configure-flags
        (let* ((gcjdir (assoc-ref %build-inputs "gcj"))
               (ecj    (string-append gcjdir "/share/java/ecj.jar"))