diff --git a/pkg/database/corpus.go b/pkg/database/corpus.go
index c5cc477..637f340 100644
--- a/pkg/database/corpus.go
+++ b/pkg/database/corpus.go
@@ -2,7 +2,7 @@ package database
 
 type CorpusEntry struct {
 	CRS       string `json:"3ALPHA"`
-	NLC       string `json:"NLC"`
+	NLC       int    `json:"NLC"`
 	NLCDESC   string `json:"NLCDESC"`
 	NLCDESC16 string `json:"NLCDESC16"`
 	STANOX    string `json:"STANOX"`