diff --git a/src/interfaces/python/pg.py b/src/interfaces/python/pg.py
index 0e40a6e5a47db3f1f65cc387c4cac02dd48e82ba..5fd36eed3448e9b0898ad73ab48db7063009bd8b 100644
--- a/src/interfaces/python/pg.py
+++ b/src/interfaces/python/pg.py
@@ -29,7 +29,7 @@ def _quote(d, t):
 
 	if t == 'bool':
 		# Can't run upper() on these
-		if d in (0, 1): return ('f', 't')[d]
+		if d in (0, 1): return ("'f'", "'t'")[d]
 
 		if string.upper(d) in ['T', 'TRUE', 'Y', 'YES', '1', 'ON']:
 			return "'t'"