diff --git a/datafusion/optimizer/tests/integration-test.rs b/datafusion/optimizer/tests/integration-test.rs
index ffff76586914..acabcbb6087c 100644
--- a/datafusion/optimizer/tests/integration-test.rs
+++ b/datafusion/optimizer/tests/integration-test.rs
@@ -29,6 +29,12 @@ use std::any::Any;
 use std::collections::HashMap;
 use std::sync::Arc;
 
+#[cfg(test)]
+#[ctor::ctor]
+fn init() {
+    let _ = env_logger::try_init();
+}
+
 #[test]
 fn case_when() -> Result<()> {
     let sql = "SELECT CASE WHEN col_int32 > 0 THEN 1 ELSE 0 END FROM test";