diff --git a/src/main/org/apache/tools/ant/types/conditions/antlib.xml b/src/main/org/apache/tools/ant/types/conditions/antlib.xml
index 59bda18d4..7f9a1e754 100644
--- a/src/main/org/apache/tools/ant/types/conditions/antlib.xml
+++ b/src/main/org/apache/tools/ant/types/conditions/antlib.xml
@@ -76,6 +76,8 @@
            classname="org.apache.tools.ant.taskdefs.condition.ParserSupports"/>
   <typedef name="resourcesmatch" onerror="ignore"
            classname="org.apache.tools.ant.taskdefs.condition.ResourcesMatch"/>
+  <typedef name="resourcecontains" onerror="ignore"
+           classname="org.apache.tools.ant.taskdefs.condition.ResourceContains"/>
   <typedef name="scriptcondition" onerror="ignore"
            classname="org.apache.tools.ant.types.optional.ScriptCondition"/>
   <typedef name="socket" onerror="ignore"
@@ -84,4 +86,4 @@
            classname="org.apache.tools.ant.taskdefs.condition.TypeFound"/>
   <typedef name="xor" onerror="ignore"
            classname="org.apache.tools.ant.taskdefs.condition.Xor"/>
-</antlib>
+</antlib>
\ No newline at end of file