diff --git a/var/spack/repos/builtin/packages/qt-base/package.py b/var/spack/repos/builtin/packages/qt-base/package.py
index 2d7d959d4a..7170de50dc 100644
--- a/var/spack/repos/builtin/packages/qt-base/package.py
+++ b/var/spack/repos/builtin/packages/qt-base/package.py
@@ -242,3 +242,6 @@ def define_feature(key, variant=None):
             define("FEATURE_system_" + k, v)
 
         return args
+
+    def setup_dependent_package(self, module, dependent_spec):
+        module.qmake = Executable(self.spec.prefix.bin.qmake)
diff --git a/var/spack/repos/builtin/packages/qt/package.py b/var/spack/repos/builtin/packages/qt/package.py
index af553b615f..89dc0f0b79 100644
--- a/var/spack/repos/builtin/packages/qt/package.py
+++ b/var/spack/repos/builtin/packages/qt/package.py
@@ -335,7 +335,7 @@ def setup_dependent_build_environment(self, env, dependent_spec):
         env.prepend_path("QT_PLUGIN_PATH", self.prefix.plugins)
 
     def setup_dependent_package(self, module, dependent_spec):
-        module.qmake = Executable(join_path(self.spec.prefix.bin, "qmake"))
+        module.qmake = Executable(self.spec.prefix.bin.qmake)
 
     def get_mkspec(self):
         """Determine the mkspecs root directory and QT platform."""