1 files changed, 6 insertions, 1 deletions
diff --git a/src/data.js b/src/data.js
index f7734e7f3..b626fda45 100644
--- a/src/data.js
+++ b/src/data.js
@@ -123,7 +123,12 @@ jQuery.fn.extend( {
 
 				// Attempt to get data from the cache
 				// with the key as-is
-				data = dataUser.get( elem, key );
+				data = dataUser.get( elem, key ) ||
+
+					// Try to find dashed key if it exists (gh-2779)
+					// This is for 2.2.x only
+					dataUser.get( elem, key.replace( rmultiDash, "-$&" ).toLowerCase() );
+
 				if ( data !== undefined ) {
 					return data;
 				}