diff --git a/.gitignore b/.gitignore
index bb6c8e2..be68ce8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -31,7 +31,7 @@ MANIFEST
 #  Usually these files are written by a python script from a template
 #  before PyInstaller builds the exe, so as to inject date/other infos into it.
 *.manifest
-*.spec
+#*.spec
 
 # Installer logs
 pip-log.txt
diff --git a/README.md b/README.md
index 7eb7a3c..12925f9 100644
--- a/README.md
+++ b/README.md
@@ -31,7 +31,7 @@ Yet another Tetris clone, with Qt5 on Python 3
 * Build with pyinstaller:
 
     ```bash
-    pyinstaller pyinstaller.spec
+    python3 -m pyinstaller pyinstaller.spec
     ```
 
 ## Credits