diff --git a/.gitignore b/.gitignore
index 4a30830..8d69083 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,8 @@
 *.o
 *.obj
 *.exe
+gmon.out
+perf.data
 dsk2img
 test-lzw
 .vscode/
diff --git a/Makefile b/Makefile
index e690944..9ed3c11 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 CC = clang
-CFLAGS ?= -Wall -Wextra -pedantic -std=c89 -Og -g
+CFLAGS ?= -Wall -Wextra -pedantic -std=c89 -Og -g -pg
 STRIP = strip
 FORMAT = clang-format -i
 BIN = dsk2img