diff --git a/app/src/main/kotlin/com/agilogy/db/postgresql/PostgreSql.kt b/app/src/main/kotlin/com/agilogy/db/postgresql/PostgreSql.kt
index 51890b2..052e36b 100644
--- a/app/src/main/kotlin/com/agilogy/db/postgresql/PostgreSql.kt
+++ b/app/src/main/kotlin/com/agilogy/db/postgresql/PostgreSql.kt
@@ -1,6 +1,6 @@
 package com.agilogy.db.postgresql
 
 object PostgreSql {
-    const val DuplicateDatabase = "42P04"
-    const val UndefinedTable = "42P01"
+    const val DuplicateDatabase: String = "42P04"
+    const val UndefinedTable: String = "42P01"
 }
\ No newline at end of file