diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5d92da4a6..5da47deb8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
 project(Eigen)
 
-cmake_minimum_required(VERSION 2.6.2)
+cmake_minimum_required(VERSION 2.8.2)
 
 # guard against in-source builds
 
diff --git a/doc/CMakeLists.txt b/doc/CMakeLists.txt
index dfe47b849..8a493031c 100644
--- a/doc/CMakeLists.txt
+++ b/doc/CMakeLists.txt
@@ -91,7 +91,7 @@ add_custom_target(doc ALL
   COMMAND doxygen Doxyfile-unsupported
   COMMAND ${CMAKE_COMMAND} -E rename html eigen-doc
   COMMAND ${CMAKE_COMMAND} -E remove eigen-doc/eigen-doc.tgz
-  COMMAND ${CMAKE_COMMAND} -E tar cvfz eigen-doc/eigen-doc.tgz eigen-doc
+  COMMAND ${CMAKE_COMMAND} -E tar cfz eigen-doc/eigen-doc.tgz eigen-doc
   COMMAND ${CMAKE_COMMAND} -E rename eigen-doc html
   WORKING_DIRECTORY ${Eigen_BINARY_DIR}/doc)