diff --git a/scalding-core/src/main/scala/com/twitter/scalding/mathematics/Matrix.scala b/scalding-core/src/main/scala/com/twitter/scalding/mathematics/Matrix.scala
index 98b63b979..49b6949f7 100644
--- a/scalding-core/src/main/scala/com/twitter/scalding/mathematics/Matrix.scala
+++ b/scalding-core/src/main/scala/com/twitter/scalding/mathematics/Matrix.scala
@@ -16,7 +16,7 @@ limitations under the License.
 package com.twitter.scalding.mathematics
 
 import com.twitter.algebird.{Field, Group, Monoid, Ring}
-import com.twitter.algebird.field._ // backwards compatiblity support
+import com.twitter.algebird.field._ // backwards compatibility support
 import com.twitter.scalding._
 
 import cascading.pipe.joiner._