diff --git a/uppsrc/Core/Value.cpp b/uppsrc/Core/Value.cpp
index 456e7166f..c61821098 100644
--- a/uppsrc/Core/Value.cpp
+++ b/uppsrc/Core/Value.cpp
@@ -132,6 +132,7 @@ static void sRegisterStd()
 	ONCELOCK {
 		RichValue<int>::Register();
 		RichValue<int64>::Register();
+		RichValue<bool>::Register();
 		RichValue<double>::Register();
 		RichValue<String>::Register();
 		RichValue<WString>::Register();