diff --git a/arch.sh b/arch.sh
index 2057ca0..4a32973 100644
--- a/arch.sh
+++ b/arch.sh
@@ -82,8 +82,8 @@ then
     fish -c "abbr ls 'exa --git --icons -gl'"
     fish -c "abbr cp 'cp -rv'"
     fish -c "abbr rm 'rm -rf'"
-    fish -c "abbr gcc 'clear; gcc -Wall -Wextra -Wshadow -Wcast-align -Wstrict-prototypes -fanalyzer -g main.c && ./a.out; rm a.out 2> /dev/null'"
-    fish -c "abbr vgcc 'clear; gcc -Wall -Wextra -Wshadow -Wcast-align -Wstrict-prototypes -fanalyzer -g main.c && valgrind --leak-check=full --show-leak-kinds=all --track-origins=yes -s ./a.out; rm a.out 2> /dev/null'"
+    fish -c "abbr gcc 'clear; gcc -Wall -Wextra -Wshadow -Wcast-align -Wstrict-prototypes -fanalyzer -fsanitize=undefined -g main.c && ./a.out; rm a.out 2> /dev/null'"
+    fish -c "abbr vgcc 'clear; gcc -Wall -Wextra -Wshadow -Wcast-align -Wstrict-prototypes -fanalyzer -fsanitize=undefined -g main.c && valgrind --leak-check=full --show-leak-kinds=all --track-origins=yes -s ./a.out; rm a.out 2> /dev/null'"
     fish -c "abbr g++ 'clear; g++ -Wall -Wextra -Wshadow -Wnon-virtual-dtor -pedantic -g -Wold-style-cast -Wsign-conversion main.cpp && ./a.out; rm a.out 2> /dev/null'"
     fish -c "abbr vg++ 'clear; g++ -Wall -Wextra -Wshadow -Wnon-virtual-dtor -pedantic -g -Wold-style-cast -Wsign-conversion main.cpp && valgrind --leak-check=full --show-leak-kinds=all --track-origins=yes -s ./a.out; rm a.out 2> /dev/null'"
     fish -c "abbr make 'clear; make && ./main; make clean 2> /dev/null'"