diff --git a/browser/app/Makefile.in b/browser/app/Makefile.in
index 992ba6115862..5073ce31afee 100644
--- a/browser/app/Makefile.in
+++ b/browser/app/Makefile.in
@@ -89,7 +89,7 @@ tools repackage:: $(DIST)/bin/$(MOZ_APP_NAME)
 	$(MKDIR) -p $(dist_dest)/$(LPROJ)
 	rsync -a --exclude '*.in' $(srcdir)/macbuild/Contents $(dist_dest) --exclude English.lproj
 	rsync -a --exclude '*.in' $(srcdir)/macbuild/Contents/Resources/English.lproj/ $(dist_dest)/$(LPROJ)
-	sed -e 's/%APP_VERSION%/$(MOZ_APP_VERSION)/' -e 's/%MAC_APP_NAME%/$(MAC_APP_NAME)/' -e 's/%MOZ_MACBUNDLE_ID%/$(MOZ_MACBUNDLE_ID)/' -e 's/%MAC_BUNDLE_VERSION%/$(MAC_BUNDLE_VERSION)/' $(srcdir)/macbuild/Contents/Info.plist.in > $(dist_dest)/Contents/Info.plist
+	sed -e 's/%APP_VERSION%/$(MOZ_APP_VERSION)/' -e 's/%MAC_APP_NAME%/$(MAC_APP_NAME)/' -e 's/%MOZ_MACBUNDLE_ID%/$(MOZ_MACBUNDLE_ID)/' -e 's/%MAC_BUNDLE_VERSION%/$(MAC_BUNDLE_VERSION)/' -e 's|%MOZ_DEVELOPER_REPO_PATH%|$(topsrcdir)|' -e 's|%MOZ_DEVELOPER_OBJ_PATH%|$(topobjdir)|' $(srcdir)/macbuild/Contents/Info.plist.in > $(dist_dest)/Contents/Info.plist
 	sed -e 's/%MAC_APP_NAME%/$(MAC_APP_NAME)/' $(srcdir)/macbuild/Contents/Resources/English.lproj/InfoPlist.strings.in | iconv -f UTF-8 -t UTF-16 > $(dist_dest)/$(LPROJ)/InfoPlist.strings
 	rsync -a --exclude-from='$(srcdir)/macbuild/Contents/MacOS-files.in' $(DIST)/bin/ $(dist_dest)/Contents/Resources
 	rsync -a --include-from='$(srcdir)/macbuild/Contents/MacOS-files.in' --exclude '*' $(DIST)/bin/ $(dist_dest)/Contents/MacOS
diff --git a/browser/app/macbuild/Contents/Info.plist.in b/browser/app/macbuild/Contents/Info.plist.in
index 6212e886dbfb..bb93ad0ae82d 100644
--- a/browser/app/macbuild/Contents/Info.plist.in
+++ b/browser/app/macbuild/Contents/Info.plist.in
@@ -220,5 +220,9 @@
 	</dict>
   <key>NSDisablePersistence</key>
   <true/>
+  <key>MozillaDeveloperRepoPath</key>
+  <string>%MOZ_DEVELOPER_REPO_PATH%</string>
+  <key>MozillaDeveloperObjPath</key>
+  <string>%MOZ_DEVELOPER_OBJ_PATH%</string>
 </dict>
 </plist>
diff --git a/ipc/app/Makefile.in b/ipc/app/Makefile.in
index b0bff7740e05..dc86dfdc8e38 100644
--- a/ipc/app/Makefile.in
+++ b/ipc/app/Makefile.in
@@ -33,7 +33,7 @@ ifeq (cocoa,$(MOZ_WIDGET_TOOLKIT)) #{
 libs::
 	$(NSINSTALL) -D $(DIST)/bin/$(PROGRAM).app
 	rsync -a -C --exclude '*.in' $(srcdir)/macbuild/Contents $(DIST)/bin/$(MOZ_CHILD_PROCESS_NAME).app 
-	sed -e 's/%PROGRAM%/$(MOZ_CHILD_PROCESS_NAME)/' $(srcdir)/macbuild/Contents/Info.plist.in > $(DIST)/bin/$(MOZ_CHILD_PROCESS_NAME).app/Contents/Info.plist
+	sed -e 's/%PROGRAM%/$(MOZ_CHILD_PROCESS_NAME)/' -e 's|%MOZ_DEVELOPER_REPO_PATH%|$(topsrcdir)|' -e 's|%MOZ_DEVELOPER_OBJ_PATH%|$(topobjdir)|' $(srcdir)/macbuild/Contents/Info.plist.in > $(DIST)/bin/$(MOZ_CHILD_PROCESS_NAME).app/Contents/Info.plist
 	sed -e 's/%APP_NAME%/$(MOZ_CHILD_PROCESS_BUNDLENAME)/' $(srcdir)/macbuild/Contents/Resources/English.lproj/InfoPlist.strings.in | \
 	  iconv -f UTF-8 -t UTF-16 > $(DIST)/bin/$(MOZ_CHILD_PROCESS_NAME).app/Contents/Resources/English.lproj/InfoPlist.strings
 	$(NSINSTALL) -D $(DIST)/bin/$(MOZ_CHILD_PROCESS_NAME).app/Contents/MacOS
diff --git a/ipc/app/macbuild/Contents/Info.plist.in b/ipc/app/macbuild/Contents/Info.plist.in
index c1bbf6506e35..a7ffdeec86df 100644
--- a/ipc/app/macbuild/Contents/Info.plist.in
+++ b/ipc/app/macbuild/Contents/Info.plist.in
@@ -31,5 +31,9 @@
 	<true/>
 	<key>NSHighResolutionCapable</key>
 	<true/>
+        <key>MozillaDeveloperRepoPath</key>
+        <string>%MOZ_DEVELOPER_REPO_PATH%</string>
+        <key>MozillaDeveloperObjPath</key>
+        <string>%MOZ_DEVELOPER_OBJ_PATH%</string>
 </dict>
 </plist>