diff --git a/src/Makefile.am b/src/Makefile.am
index 861b8ae9b0c0cfe63efddb22137953c9d9619215..e56d8733e99593d471eb875ed5670c6f5d7a9f7d 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -29,7 +29,9 @@ AM_CXXFLAGS = \
 	-Wno-type-limits \
 	-Wno-overloaded-virtual \
 	-Wno-reorder \
-	-Wno-sign-compare
+	-Wno-sign-compare \
+	-Wno-c++11-extensions \
+	-Wno-missing-declarations
 
 AM_CPPFLAGS = \
 	$(DUNE_CPPFLAGS) \