diff --git a/api/source/scan.py b/api/source/scan.py
index 58fd3ec..8ca9304 100755
--- a/api/source/scan.py
+++ b/api/source/scan.py
@@ -82,8 +82,11 @@ def progress(queue, number):
 def main():
     modules = []
 
-    path_to_code = os.path.abspath(os.path.join(os.path.split(__file__)[0],
-                                                '..', '..', '..', '..', 'openlp', 'trunk'))
+    if 'OPENLP_SOURCE' in os.environ:
+        path_to_code = os.path.abspath(os.environ['OPENLP_SOURCE'])
+    else:
+        path_to_code = os.path.abspath(os.path.join(os.path.split(__file__)[0],
+                                                    '..', '..', '..', '..', 'openlp', 'trunk'))
     if not os.path.exists(path_to_code):
         print('Incorrect path to code, expecting "%s"' % path_to_code)
         sys.exit(1)
@@ -118,3 +121,4 @@ def main():
 
 if __name__ == '__main__':
     main()
+