diff --git a/Code/Mantid/docs/source/algorithms/GroupDetectors-v1.rst b/Code/Mantid/docs/source/algorithms/GroupDetectors-v1.rst
index 54ab66eda1d7da80e5711f4e2ba84686d87cbb0a..5d300deff4c8eeeae048689034ef38b15262928b 100644
--- a/Code/Mantid/docs/source/algorithms/GroupDetectors-v1.rst
+++ b/Code/Mantid/docs/source/algorithms/GroupDetectors-v1.rst
@@ -59,7 +59,7 @@ An example of an input file follows::
  1
  64
  1 2 3 4 5 6 7 8 9 10
- 11 12 13 14 15 16 17 18 19 20`
+ 11 12 13 14 15 16 17 18 19 20
  21 22 23 24 25 26 27 28 29 30
  31 32 33 34 35 36 37 38 39 40
  41 42 43 44 45 46 47 48 49 50