diff --git a/alacritty_config_gui.py b/alacritty_config_gui.py
index 29d93cb..a358492 100644
--- a/alacritty_config_gui.py
+++ b/alacritty_config_gui.py
@@ -5,7 +5,13 @@ import sys
 
 import yaml
 
-from PyQt5 import QtWidgets, QtGui, QtCore
+try:
+    from PyQt5 import QtWidgets, QtGui, QtCore
+except:
+    print("alacritty-config-gui depends on PyQt5. I couldn’t locate PyQt5.")
+    print("Sorry about that.")
+    print("\nRunning `pip3 install PyQt5` could help.")
+    sys.exit(1)
 
 
 ALACRITTY_CONFIG = os.path.expanduser("~/.config/alacritty/alacritty.yml")