diff --git a/PROFILING b/PROFILING
new file mode 100644
index 000000000..1560c6ba2
--- /dev/null
+++ b/PROFILING
@@ -0,0 +1,6 @@
+To use the GHC profiler:
+
+    make clean
+    HCFLAGS="-prof -auto-all -O0" make
+    ./pandoc +RTS -p -RTS [file]...
+    less pandoc.prof