diff --git a/collects/mred/private/wx/gtk/utils.rkt b/collects/mred/private/wx/gtk/utils.rkt
index 6fa2987bd2..f91f6a9663 100644
--- a/collects/mred/private/wx/gtk/utils.rkt
+++ b/collects/mred/private/wx/gtk/utils.rkt
@@ -56,26 +56,36 @@
   (case (system-type)
     [(windows)
      (ffi-lib "libgobject-2.0-0")]
+    [(unix)
+     (ffi-lib "libgobject-2.0" '("0"))]
     [else gdk-lib]))
 (define glib-lib 
   (case (system-type)
     [(windows)
      (ffi-lib "libglib-2.0-0")]
+    [(unix)
+     (ffi-lib "libglib-2.0" '("0"))]
     [else gdk-lib]))
 (define gio-lib 
   (case (system-type)
     [(windows)
      (ffi-lib "libgio-2.0-0")]
+    [(unix)
+     (ffi-lib "libgio-2.0" '("0"))]
     [else gdk-lib]))
 (define gmodule-lib 
   (case (system-type)
     [(windows)
      (ffi-lib "libgmodule-2.0-0")]
+    [(unix)
+     (ffi-lib "libgmodule-2.0" '("0"))]
     [else gdk-lib]))
 (define gdk_pixbuf-lib 
   (case (system-type)
     [(windows)
      (ffi-lib "libgdk_pixbuf-2.0-0")]
+    [(unix)
+     (ffi-lib "libgdk_pixbuf-2.0" '("0"))]
     [else gdk-lib]))
 (define gtk-lib
   (case (system-type)
diff --git a/collects/racket/draw/pango.rkt b/collects/racket/draw/pango.rkt
index 415e1d1fb3..51e430c5c0 100644
--- a/collects/racket/draw/pango.rkt
+++ b/collects/racket/draw/pango.rkt
@@ -35,6 +35,7 @@
 (define glib-lib 
   (case (system-type)
     [(macosx) (ffi-lib "libgobject-2.0.0")]
+    [(unix) (ffi-lib "libgobject-2.0" '("0"))]
     [else #f]))
 
 (define-ffi-definer define-pango pango-lib