diff --git a/R-BufferedMatrix.spec b/R-BufferedMatrix.spec
index 15a151d..42a230a 100644
--- a/R-BufferedMatrix.spec
+++ b/R-BufferedMatrix.spec
@@ -7,7 +7,6 @@ Release:           2%{dist}
 Summary:           A matrix data storage object method from bioconductor
 Summary(fr):       Stockage des données d'un matrice dans un fichier temporaire
 
-Group:             Applications/Engineering
 License:           LGPLv2+
 URL:               http://bioconductor.org/packages/release/bioc/html/BufferedMatrix.html
 Source0:           http://bioconductor.org/packages/release/bioc/src/contrib/%{packname}_%{version}.tar.gz 
@@ -17,7 +16,6 @@ Requires:          R-core >= %{Rvers} R-methods
 
 %package           devel
 Summary:           Development files for %{name}
-Group:             Development/Libraries
 Requires:          %{name}%{?_isa} = %{version}-%{release}
 
 %description