diff --git a/.gitignore b/.gitignore
index a28f5dc..a70a969 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,5 +2,7 @@
 *.o
 src/upiwin
 src/splash.bin
+src/i_*.bin
 buildutils/mksplash
+buildutils/mkgfx
 output/
diff --git a/docs/os-instructions.md b/docs/os-instructions.md
index 8f110cb..828c6e1 100644
--- a/docs/os-instructions.md
+++ b/docs/os-instructions.md
@@ -58,5 +58,7 @@ After cloning the repository for UPIWIN, enter the following commands:
     cd upiwin
     make
 
-To execute, enter the command `sudo src/upiwin` followed by the name of the script to be run. For example,
-`sudo src/upiwin scripts/demo1.py`.
+The resulting executable and demo scripts will be placed into the `output` directory.
+
+To execute, change to the `output` directory and enter the command `sudo ./upiwin` followed by the name of the script
+to be run. For example, `sudo ./upiwin demo1.py`.