diff --git a/config/faster/rules.mk b/config/faster/rules.mk
index 9d5d36e34452..cbf0f2ca2742 100644
--- a/config/faster/rules.mk
+++ b/config/faster/rules.mk
@@ -43,7 +43,6 @@ default: $(addprefix install-,$(INSTALL_MANIFESTS))
 
 # Explicit files to be built for a default build
 default: $(addprefix $(TOPOBJDIR)/,$(MANIFEST_TARGETS))
-default: $(TOPOBJDIR)/dist/bin/greprefs.js
 default: $(TOPOBJDIR)/dist/bin/platform.ini
 
 # Targets from the recursive make backend to be built for a default build
@@ -126,7 +125,6 @@ $(addprefix $(TOPOBJDIR)/,$(MANIFEST_TARGETS)): FORCE
 # that are not supported by data in moz.build.
 
 # Files to build with the recursive backend and simply copy
-$(TOPOBJDIR)/dist/bin/greprefs.js: $(TOPOBJDIR)/modules/libpref/greprefs.js
 $(TOPOBJDIR)/dist/bin/platform.ini: $(TOPOBJDIR)/toolkit/xre/platform.ini
 
 # The xpidl target in config/makefiles/xpidl requires the install manifest for
diff --git a/modules/libpref/Makefile.in b/modules/libpref/Makefile.in
deleted file mode 100644
index 23a8ce9b3c44..000000000000
--- a/modules/libpref/Makefile.in
+++ /dev/null
@@ -1,33 +0,0 @@
-#
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-include $(topsrcdir)/config/rules.mk
-
-GARBAGE		+= $(addprefix $(DIST)/bin/defaults/pref/, \
-			mailnews.js editor.js \
-			aix.js unix.js winpref.js)
-
-GARBAGE		+= greprefs.js
-
-# TODO bug 813259 external files should be defined near their location in the source tree.
-grepref_files = $(topsrcdir)/netwerk/base/security-prefs.js $(srcdir)/init/all.js
-
-ifdef MOZ_DATA_REPORTING
-grepref_files += $(topsrcdir)/services/datareporting/datareporting-prefs.js
-endif
-
-ifdef MOZ_SERVICES_HEALTHREPORT
-ifneq (android,$(MOZ_WIDGET_TOOLKIT))
-grepref_files += $(topsrcdir)/services/healthreport/healthreport-prefs.js
-else
-grepref_files += $(topsrcdir)/mobile/android/chrome/content/healthreport-prefs.js
-endif
-endif
-
-greprefs.js: $(grepref_files)
-	$(call py_action,preprocessor,$(PREF_PPFLAGS) $(DEFINES) $(ACDEFINES) $(MOZ_DEBUG_DEFINES) $^ -o $@)
-
-libs:: greprefs.js
-	$(INSTALL) $^ $(DIST)/bin/
diff --git a/modules/libpref/greprefs.js b/modules/libpref/greprefs.js
new file mode 100644
index 000000000000..5f0b68c70d2a
--- /dev/null
+++ b/modules/libpref/greprefs.js
@@ -0,0 +1,12 @@
+#include ../../netwerk/base/security-prefs.js
+#include init/all.js
+#ifdef MOZ_DATA_REPORTING
+#include ../../services/datareporting/datareporting-prefs.js
+#endif
+#ifdef MOZ_SERVICES_HEALTHREPORT
+#if MOZ_WIDGET_TOOLKIT == android
+#include ../../mobile/android/chrome/content/healthreport-prefs.js
+#else
+#include ../../services/healthreport/healthreport-prefs.js
+#endif
+#endif
diff --git a/modules/libpref/moz.build b/modules/libpref/moz.build
index 42efa9e2dccf..1e36ffcfaf53 100644
--- a/modules/libpref/moz.build
+++ b/modules/libpref/moz.build
@@ -45,3 +45,7 @@ DEFINES['MOZ_WIDGET_TOOLKIT'] = CONFIG['MOZ_WIDGET_TOOLKIT']
 
 if CONFIG['GNU_CXX']:
     CXXFLAGS += ['-Wshadow']
+
+DIST_FILES += [
+    'greprefs.js',
+]