diff --git a/src/numex_data.c b/src/numex_data.c
index c0a00adf..85210936 100644
--- a/src/numex_data.c
+++ b/src/numex_data.c
@@ -2222,7 +2222,7 @@ numex_rule_source_t numex_rules[] = {
     {"구", (numex_rule_t){NUMEX_LEFT_CONTEXT_NONE, NUMEX_RIGHT_CONTEXT_NONE, NUMEX_CARDINAL_RULE, GENDER_NONE, CATEGORY_DEFAULT, 10, 9LL}},
     {"십", (numex_rule_t){NUMEX_LEFT_CONTEXT_MULTIPLY, NUMEX_RIGHT_CONTEXT_ADD, NUMEX_CARDINAL_RULE, GENDER_NONE, CATEGORY_DEFAULT, 10, 10LL}},
     {"백", (numex_rule_t){NUMEX_LEFT_CONTEXT_MULTIPLY, NUMEX_RIGHT_CONTEXT_ADD, NUMEX_CARDINAL_RULE, GENDER_NONE, CATEGORY_DEFAULT, 10, 100LL}},
-    {"천", (numex_rule_t){NUMEX_LEFT_CONTEXT_MULTIPLY, NUMEX_RIGHT_CONTEXT_NONE, NUMEX_CARDINAL_RULE, GENDER_NONE, CATEGORY_DEFAULT, 10, 1000LL}},
+    {"천", (numex_rule_t){NUMEX_LEFT_CONTEXT_MULTIPLY, NUMEX_RIGHT_CONTEXT_ADD, NUMEX_CARDINAL_RULE, GENDER_NONE, CATEGORY_DEFAULT, 10, 1000LL}},
     {"만", (numex_rule_t){NUMEX_LEFT_CONTEXT_MULTIPLY, NUMEX_RIGHT_CONTEXT_ADD, NUMEX_CARDINAL_RULE, GENDER_NONE, CATEGORY_DEFAULT, 10, 10000LL}},
     {"억", (numex_rule_t){NUMEX_LEFT_CONTEXT_MULTIPLY, NUMEX_RIGHT_CONTEXT_ADD, NUMEX_CARDINAL_RULE, GENDER_NONE, CATEGORY_DEFAULT, 10, 100000000LL}},
     {"조", (numex_rule_t){NUMEX_LEFT_CONTEXT_MULTIPLY, NUMEX_RIGHT_CONTEXT_ADD, NUMEX_CARDINAL_RULE, GENDER_NONE, CATEGORY_DEFAULT, 10, 1000000000000LL}},