diff --git a/zeronet.py b/zeronet.py
index e66d4112..2f4cc561 100755
--- a/zeronet.py
+++ b/zeronet.py
@@ -6,6 +6,10 @@ import sys
 
 
 def main():
+    if sys.version_info.major < 3:
+        print("Error: Python 3.x is required")
+        sys.exit(0)
+
     if "--silent" not in sys.argv:
         print("- Starting ZeroNet...")