diff --git a/var/spack/repos/builtin/packages/bdftopcf/package.py b/var/spack/repos/builtin/packages/bdftopcf/package.py
index f8d8d7514cb..1e8944c9987 100644
--- a/var/spack/repos/builtin/packages/bdftopcf/package.py
+++ b/var/spack/repos/builtin/packages/bdftopcf/package.py
@@ -41,4 +41,6 @@ class Bdftopcf(AutotoolsPackage):
     depends_on('libxfont')
 
     depends_on('pkg-config@0.9.0:', type='build')
+    depends_on('xproto', type='build')
+    depends_on('fontsproto', type='build')
     depends_on('util-macros', type='build')