diff --git a/CMakeLists.txt b/CMakeLists.txt
index 767d9711a90caf9990ed72e17cc7ab51863558e1..fc71bbb8b57571e540f0018a58358e7e329695d7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -48,7 +48,6 @@ set_source_files_properties( ${COMMON_HEADER} PROPERTIES HEADER_FILE_ONLY 1 )
 
 #disable most warnings from dependent modules
 foreach(_mod ${ALL_DEPENDENCIES})
-dune_module_to_uppercase(_upper_case "${_mod}")
     if(${_mod}_INCLUDE_DIRS)
         foreach( _idir ${${_mod}_INCLUDE_DIRS} )
             add_definitions("-isystem ${_idir}")
diff --git a/dune/gdt/discretizations/default.hh b/dune/gdt/discretizations/default.hh
index c6654e641e859cf0a4d0eb5eec8adee1f8ebdc42..ab0e2b779787e12544889204edef23bd02a87d20 100644
--- a/dune/gdt/discretizations/default.hh
+++ b/dune/gdt/discretizations/default.hh
@@ -415,6 +415,7 @@ public:
       std::abort();
     }
 #else // HAVE_EIGEN
+    (void)solution; // silence warning during compilation
     static_assert(AlwaysFalse<DiscreteSolutionType>::value, "You are missing eigen!");
 #endif // HAVE_EIGEN
   }
diff --git a/dune/gdt/local/fluxes/godunov.hh b/dune/gdt/local/fluxes/godunov.hh
index 9cd0d5de9347e65db537ecdfcb1d907fd9c59592..54890c0a106f7412445f24b6d09aa11cc13bcffd 100644
--- a/dune/gdt/local/fluxes/godunov.hh
+++ b/dune/gdt/local/fluxes/godunov.hh
@@ -13,7 +13,9 @@
 #include <memory>
 
 #if HAVE_EIGEN
+#include <dune/xt/common/disable_warnings.hh>
 #include <Eigen/Eigenvalues>
+#include<dune/xt/common/reenable_warnings.hh>
 #endif
 
 #include <boost/numeric/conversion/cast.hpp>
diff --git a/dune/gdt/local/fluxes/laxfriedrichs.hh b/dune/gdt/local/fluxes/laxfriedrichs.hh
index 65c77e48a51f37a0a93e19b3c58542cd37ce9b4c..c24b15daf4f5352c785cdf908ecc602e13f1bc42 100644
--- a/dune/gdt/local/fluxes/laxfriedrichs.hh
+++ b/dune/gdt/local/fluxes/laxfriedrichs.hh
@@ -13,7 +13,9 @@
 #include <memory>
 
 #if HAVE_EIGEN
+#include <dune/xt/common/disable_warnings.hh>
 #include <Eigen/Eigenvalues>
+#include<dune/xt/common/reenable_warnings.hh>
 #endif
 
 #include <dune/common/dynmatrix.hh>