diff --git a/landlab/components/river_flow_dynamics/river_flow_dynamics.py b/landlab/components/river_flow_dynamics/river_flow_dynamics.py
index c9b8b814ef..fd6cd942cb 100644
--- a/landlab/components/river_flow_dynamics/river_flow_dynamics.py
+++ b/landlab/components/river_flow_dynamics/river_flow_dynamics.py
@@ -189,7 +189,7 @@
 ...     ]
 ... )
 
-For compatibility issues, we present this as a difference and not a direct 
+For compatibility issues, we present this as a difference and not a direct
 comparison.
 The calculated flow_depth is: