diff --git a/src/Makefile.am b/src/Makefile.am
index 7e0dc7f..22da04f 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -4,6 +4,7 @@ METASOURCES=AUTO
 
 bin_PROGRAMS=epple2
 
+AM_CXXFLAGS=-std=c++11 -Wall -O3
 AM_CPPFLAGS=$(all_includes)
 epple2_LDFLAGS=$(all_libraries)