diff --git a/exploration/GR3D_Rdescription/GR3D_Rdescription.Rproj b/exploration/GR3D_Rdescription/GR3D_Rdescription.Rproj
index 8e3c2ebc99e2e337f7d69948b93529a437590b27..e69aeb85bf740920facf97fa7cade60e98beaaca 100644
--- a/exploration/GR3D_Rdescription/GR3D_Rdescription.Rproj
+++ b/exploration/GR3D_Rdescription/GR3D_Rdescription.Rproj
@@ -11,3 +11,5 @@ Encoding: UTF-8
 
 RnwWeave: Sweave
 LaTeX: pdfLaTeX
+
+SpellingDictionary: en_GB