diff --git a/Foundation/CPString.j b/Foundation/CPString.j
index e9331e000..eeccf81b5 100644
--- a/Foundation/CPString.j
+++ b/Foundation/CPString.j
@@ -570,6 +570,16 @@ var CPStringNull = [CPNull null];
     return aString && aString != "" && self.indexOf(aString) == 0;
 }
 
+/*!
+ Returns \c YES if the receiver contains
+ the specified string. If \c aString
+ is empty, the method will return \c NO.
+ */
+- (BOOL)containsString:(CPString)aString
+{
+    return aString && aString != "" && self.indexOf(aString) >= 0;
+}
+
 /*!
     Returns \c YES if the receiver ends
     with the specified string. If \c aString