diff --git a/main.py b/main.py
index db2e3c5..cd44ab0 100644
--- a/main.py
+++ b/main.py
@@ -10,6 +10,7 @@ try:
     import RPi.GPIO as GPIO
 except ImportError:
     print('Some modules are missing. Try to install them with "pip3 install -r requirements.txt"')
+    print(ImportError)
     exit()
 
 sys.path.append('./SDL_Adafruit_ADS1x15')