diff --git a/scripts/StepRunner/StepsRunner.py b/scripts/StepRunner/StepsRunner.py
index 9fcb2a8..d584d2b 100644
--- a/scripts/StepRunner/StepsRunner.py
+++ b/scripts/StepRunner/StepsRunner.py
@@ -29,4 +29,5 @@ class StepsRunner:
 			cmd = self.removeProjectBuilder.getCommandFor(line)
 			cmd.execute()
 		else:
-			raise Exception('unrecognised step')
\ No newline at end of file
+			msg = "unrecognised step. Line: '{0}'".format(line)
+			raise Exception(msg)
\ No newline at end of file