diff --git a/gnu/packages/music.scm b/gnu/packages/music.scm
index 58af95b7c8..b62d953067 100644
--- a/gnu/packages/music.scm
+++ b/gnu/packages/music.scm
@@ -1097,9 +1097,12 @@ (define-public synthv1
      `(("jack" ,jack-1)
        ("lv2" ,lv2)
        ("alsa-lib" ,alsa-lib)
+       ("non-session-manager" ,non-session-manager)
        ("liblo" ,liblo)
        ("qtbase" ,qtbase)
        ("qttools" ,qttools)))
+    (native-inputs
+     `(("pkg-config" ,pkg-config)))
     (home-page "http://synthv1.sourceforge.net")
     (synopsis "Polyphonic subtractive synthesizer")
     (description