diff --git a/hutool-core/src/test/java/cn/hutool/core/convert/ConvertTest.java b/hutool-core/src/test/java/cn/hutool/core/convert/ConvertTest.java
index d07478cb5..402140e68 100644
--- a/hutool-core/src/test/java/cn/hutool/core/convert/ConvertTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/convert/ConvertTest.java
@@ -65,6 +65,14 @@ public class ConvertTest {
 		Assert.assertEquals("a", result);
 	}
 
+	@Test
+	public void toStrTest4() {
+		// 被当作八进制
+		@SuppressWarnings("OctalInteger")
+		final String result = Convert.toStr(001200);
+		Assert.assertEquals("640", result);
+	}
+
 	@Test
 	public void toIntTest() {
 		String a = " 34232";