diff --git src/bin/environment.in src/bin/environment.in
index 400369b..8d85f40 100644
--- src/bin/environment.in
+++ src/bin/environment.in
@@ -43,6 +43,9 @@ PATH={GNC_BIN};{PATH}
 # Tell GnuCash where to look for GnuCash modules
 GNC_MODULE_PATH={GNC_LIB};{GNC_MODULE_PATH}
 
+# Tell GnuCash where to look for local python site-packages.
+PYTHONPATH={SYS_LIB}/python2.7/site-packages;${PYTHONPATH}
+
 # Prevent embedded guile from issuing deprecation warnings
 GUILE_WARN_DEPRECATED=no
 
