diff --git a/Tools/Scripts/run-gtk-tests b/Tools/Scripts/run-gtk-tests
index 5088447a4ef1..e98086039b2e 100755
--- a/Tools/Scripts/run-gtk-tests
+++ b/Tools/Scripts/run-gtk-tests
@@ -31,9 +31,6 @@ sys.path.append(os.path.join(top_level_directory, "Tools", "gtk"))
 import common
 import jhbuildutils
 
-sys.path.insert(0, os.path.join(os.path.dirname(__file__), "../jhbuild"))
-import jhbuildrc_common 
-
 class SkippedTest:
     ENTIRE_SUITE = None
 
@@ -198,7 +195,7 @@ class TestRunner:
     def _setup_testing_environment(self):
         self._test_env = os.environ
         self._test_env['GSETTINGS_BACKEND'] = 'memory'
-        self._test_env["TEST_WEBKIT_API_WEBKIT2_RESOURCES_PATH"] = jhbuildrc_common.top_level_path("Tools", "TestWebKitAPI", "Tests", "WebKit2")
+        self._test_env["TEST_WEBKIT_API_WEBKIT2_RESOURCES_PATH"] = common.top_level_path("Tools", "TestWebKitAPI", "Tests", "WebKit2")
         self._test_env["TEST_WEBKIT_API_WEBKIT2_INJECTED_BUNDLE_PATH"] = common.tests_library_build_path()
         self._test_env["WEBKIT_EXEC_PATH"] = self._programs_path
 
diff --git a/Tools/gtk/check-gdom-symbols b/Tools/gtk/check-gdom-symbols
index 588b7e83e729..bf35c213d0c5 100755
--- a/Tools/gtk/check-gdom-symbols
+++ b/Tools/gtk/check-gdom-symbols
@@ -22,9 +22,6 @@ import subprocess
 import sys
 import tempfile
 
-sys.path.insert(0, os.path.join(os.path.dirname(__file__), "../jhbuild"))
-import jhbuildrc_common 
-
 def should_update_symbols_file(new, old):
     if not os.path.exists(old):
         return False
@@ -52,7 +49,7 @@ if __name__ == '__main__':
                 tmp.write(file_handle.read())
         tmp.flush()
 
-        gdom_source_path = jhbuildrc_common.top_level_path('Source', 'WebCore', 'bindings')
+        gdom_source_path = common.top_level_path('Source', 'WebCore', 'bindings')
         api_break_test_path = os.path.join(gdom_source_path, 'scripts', 'gobject-run-api-break-test')
         subprocess.call([sys.executable, api_break_test_path, os.path.join(gdom_source_path, 'gobject',  'webkitdom.symbols'), tmp.name])
 
diff --git a/Tools/gtk/common.py b/Tools/gtk/common.py
index 6e51af59b946..02f8b654116e 100644
--- a/Tools/gtk/common.py
+++ b/Tools/gtk/common.py
@@ -21,9 +21,7 @@
 import subprocess
 import sys
 
-sys.path.insert(0, os.path.join(os.path.dirname(__file__), "../jhbuild"))
-import jhbuildrc_common
-
+top_level_dir = None
 build_dir = None
 library_build_dir = None
 tests_library_build_dir = None
@@ -31,6 +29,13 @@
 build_types = ('Release', 'Debug')
 
 
+def top_level_path(*args):
+    global top_level_dir
+    if not top_level_dir:
+        top_level_dir = os.path.join(os.path.dirname(__file__), '..', '..')
+    return os.path.join(*(top_level_dir,) + args)
+
+
 def set_build_types(new_build_types):
     global build_types
     build_types = new_build_types
@@ -100,20 +105,20 @@ def is_valid_build_directory(path):
 
     global build_types
     for build_type in build_types:
-        build_dir = jhbuildrc_common.top_level_path('WebKitBuild', build_type)
+        build_dir = top_level_path('WebKitBuild', build_type)
         if is_valid_build_directory(build_dir):
             return build_dir
 
     # distcheck builds in a directory named _build in the top-level path.
-    build_dir = jhbuildrc_common.top_level_path("_build")
+    build_dir = top_level_path("_build")
     if is_valid_build_directory(build_dir):
         return build_dir
 
-    build_dir = jhbuildrc_common.top_level_path()
+    build_dir = top_level_path()
     if is_valid_build_directory(build_dir):
         return build_dir
 
-    build_dir = jhbuildrc_common.top_level_path("WebKitBuild")
+    build_dir = top_level_path("WebKitBuild")
     if is_valid_build_directory(build_dir):
         return build_dir
 
diff --git a/Tools/gtk/find-make-dist-errors b/Tools/gtk/find-make-dist-errors
index a0c4150cab3f..880c780a5134 100755
--- a/Tools/gtk/find-make-dist-errors
+++ b/Tools/gtk/find-make-dist-errors
@@ -20,9 +20,6 @@ import os
 import subprocess
 import sys
 
-sys.path.insert(0, os.path.join(os.path.dirname(__file__), "../jhbuild"))
-import jhbuildrc_common 
-
 def is_source_file_listing(line):
     return line.strip().startswith('Source')
 
@@ -89,7 +86,7 @@ def get_unlisted_headers(listed_makefile_headers):
 def get_missing_headers(listed_makefile_headers):
     missing = set()
     for header in listed_makefile_headers:
-        if not os.path.exists(jhbuildrc_common.top_level_path(header)):
+        if not os.path.exists(common.top_level_path(header)):
             missing.add(header)
     return missing
 
diff --git a/Tools/gtk/generate-inspector-gresource-manifest.py b/Tools/gtk/generate-inspector-gresource-manifest.py
index 0bd639429957..58a1df17f5a0 100755
--- a/Tools/gtk/generate-inspector-gresource-manifest.py
+++ b/Tools/gtk/generate-inspector-gresource-manifest.py
@@ -20,10 +20,7 @@
 import os
 import sys
 
-sys.path.insert(0, os.path.join(os.path.dirname(__file__), "../jhbuild"))
-import jhbuildrc_common
-
-resources_path = jhbuildrc_common.top_level_path() + "/Source/WebInspectorUI/"
+resources_path = common.top_level_path() + "/Source/WebInspectorUI/"
 inspector_files = \
     glob.glob(resources_path + 'UserInterface/*.html') + \
     glob.glob(resources_path + 'UserInterface/*.js') + \