diff --git a/sugar/__installed__.py.in b/sugar/__installed__.py.in
index bf7fd9b4..415e0e1b 100644
--- a/sugar/__installed__.py.in
+++ b/sugar/__installed__.py.in
@@ -1,3 +1,2 @@
-sugar_source_dir = None
 sugar_data_dir = '@prefix@/share/sugar'
 sugar_shell_bin_dir = '@prefix@/bin'