diff --git a/src/lagrangian/basic/InteractionLists/InteractionLists.H b/src/lagrangian/basic/InteractionLists/InteractionLists.H
index 2ff4ecfd5ef76b94cd072689b3c21a4ed8f7e3cf..4e2a694edbfe87cafc855112814e0780ae7b907f 100644
--- a/src/lagrangian/basic/InteractionLists/InteractionLists.H
+++ b/src/lagrangian/basic/InteractionLists/InteractionLists.H
@@ -30,7 +30,7 @@ Description
     cells are potentially in range of each other.
 
     Builds referred interaction list, specifying which cells are
-    required to provideinteractions across coupled patched (cyclic or
+    required to provide interactions across coupled patched (cyclic or
     processor).  Generates referred cells, and refers particles to the
     correct processor, applying the appropriate transform.