diff --git a/apache-commons-net.spec b/apache-commons-net.spec
index 51e8f9e..3d33eda 100644
--- a/apache-commons-net.spec
+++ b/apache-commons-net.spec
@@ -42,7 +42,7 @@ rm src/test/java/org/apache/commons/net/time/TimeTCPClientTest.java
 rm src/test/java/org/apache/commons/net/tftp/TFTPServerPathTest.java
 # Workaround for suprious test failure (NET-586)
 # Reported upstream: https://issues.apache.org/jira/browse/NET-586
-sed -i '/testFeb29IfLeapYear/s/./@org.junit.Ignore/' $(find -name FTPTimestampParserImplTest.java)
+sed -i 's/testFeb29IfLeapYear/ignored_&/' $(find -name FTPTimestampParserImplTest.java)
 
 %mvn_file  : %{short_name} %{name}
 %mvn_alias : org.apache.commons:%{short_name}