diff --git a/Makefile b/Makefile
index 918578f..9ac3dcb 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-EXAMPLES_CXXFLAGS = -std=c++14 -Wall -Wextra -Wshadow -I.
+EXAMPLES_CXXFLAGS = -O2 -g -std=c++14 -Wall -Wextra -Wshadow -I.
 
 EXAMPLES_OBJ = \
 	examples/format.o \