diff --git a/rowers/models.py b/rowers/models.py
index a8e8516e..048a1fb3 100644
--- a/rowers/models.py
+++ b/rowers/models.py
@@ -3529,26 +3529,32 @@ class Workout(models.Model):
         workouttype = self.workouttype
 
         if workouttype != 'water':
-            stri = u'{d} {n} {dist}m {duration} {workouttype} {ownerfirst} {ownerlast}'.format(
-                d=date.strftime('%Y-%m-%d'),
-                n=name,
-                dist=distance,
-                duration=duration.strftime("%H:%M:%S"),
-                workouttype=workouttype,
-                ownerfirst=ownerfirst,
-                ownerlast=ownerlast,
-            )
+            try:
+                stri = u'{d} {n} {dist}m {duration} {workouttype} {ownerfirst} {ownerlast}'.format(
+                    d=date.strftime('%Y-%m-%d'),
+                    n=name,
+                    dist=distance,
+                    duration=duration.strftime("%H:%M:%S"),
+                    workouttype=workouttype,
+                    ownerfirst=ownerfirst,
+                    ownerlast=ownerlast,
+                    )
+            except ValueError:
+                stri = 'workout'
         else:
-            stri = u'{d} {n} {dist}m {duration:%H:%M:%S} {workouttype} {boattype} {ownerfirst} {ownerlast}'.format(
-                d=date.strftime('%Y-%m-%d'),
-                n=name,
-                dist=distance,
-                duration=duration,
-                workouttype=workouttype,
-                boattype=boattype,
-                ownerfirst=ownerfirst,
-                ownerlast=ownerlast,
-            )
+            try:
+                stri = u'{d} {n} {dist}m {duration} {workouttype} {boattype} {ownerfirst} {ownerlast}'.format(
+                    d=date.strftime('%Y-%m-%d'),
+                    n=name,
+                    dist=distance,
+                    duration=duration.strftime("%H:%M:%S"),
+                    workouttype=workouttype,
+                    boattype=boattype,
+                    ownerfirst=ownerfirst,
+                    ownerlast=ownerlast,
+                )
+            except ValueError:
+                stri = 'workout'
 
         return stri