diff --git a/var/spack/repos/builtin/packages/libplist/package.py b/var/spack/repos/builtin/packages/libplist/package.py
index b4f6ba18af660d1b3633fcb0a251aaa58b3af162..ea183f2020fd465d352118d53f73b0ca667e2d40 100644
--- a/var/spack/repos/builtin/packages/libplist/package.py
+++ b/var/spack/repos/builtin/packages/libplist/package.py
@@ -27,7 +27,7 @@ class Libplist(Package):
     depends_on('autoconf',   type='build', when='@master')
     depends_on('automake',   type='build', when='@master')
     depends_on('libtool',    type='build', when='@master')
-    depends_on('pkg-config', type='build')
+    depends_on('pkgconfig',  type='build')
 
     phases = ['autogen', 'install']
 
diff --git a/var/spack/repos/builtin/packages/libusbmuxd/package.py b/var/spack/repos/builtin/packages/libusbmuxd/package.py
index 46c852b3fd4aa1c506eb1a0e132a26865cebac94..0de782c2043c9735c1427706e35fc5ae4bf18b00 100644
--- a/var/spack/repos/builtin/packages/libusbmuxd/package.py
+++ b/var/spack/repos/builtin/packages/libusbmuxd/package.py
@@ -20,7 +20,7 @@ class Libusbmuxd(AutotoolsPackage):
     depends_on('autoconf',   type='build', when='@master')
     depends_on('automake',   type='build', when='@master')
     depends_on('libtool',    type='build', when='@master')
-    depends_on('pkg-config', type='build')
+    depends_on('pkgconfig',  type='build')
     depends_on('libplist')
 
     def configure_args(self):