diff --git a/hutool-core/src/test/java/cn/hutool/core/text/NamingCaseTest.java b/hutool-core/src/test/java/cn/hutool/core/text/NamingCaseTest.java
index a8800578a..62545d934 100644
--- a/hutool-core/src/test/java/cn/hutool/core/text/NamingCaseTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/text/NamingCaseTest.java
@@ -12,4 +12,10 @@ public class NamingCaseTest {
 				.set("customerNickV2", "customer_nick_v2")
 				.forEach((key, value) -> Assert.assertEquals(value, NamingCase.toUnderlineCase(key)));
 	}
+
+	@Test
+	public void toUnderLineCaseTest2(){
+		final String wPRunOZTime = NamingCase.toUnderlineCase("wPRunOZTime");
+		Assert.assertEquals("w_P_run_OZ_time", wPRunOZTime);
+	}
 }