diff --git a/core/schema.rs b/core/schema.rs
index de35fa0af..6230c7a2d 100644
--- a/core/schema.rs
+++ b/core/schema.rs
@@ -113,7 +113,7 @@ impl BTreeTable {
         }
     }
 
-    #[allow(dead_code)] // used in tests
+    #[cfg(test)]
     pub fn to_sql(&self) -> String {
         let mut sql = format!("CREATE TABLE {} (\n", self.name);
         for (i, column) in self.columns.iter().enumerate() {