diff --git a/setup.py b/setup.py
index 90c51db7f2..22d6f7ef98 100755
--- a/setup.py
+++ b/setup.py
@@ -31,6 +31,13 @@
     is_CentOS, is_AlmaLinux, is_RockyLinux, is_RedHat, is_openSUSE, is_OracleLinux,
     )
 
+if BITS!=64:
+    print(f"Warning: {BITS}-bit architecture, only 64-bits are officially supported")
+    from time import sleep
+    for _ in range(5):
+        sleep(1)
+        print(".")
+
 
 #*******************************************************************************
 print(" ".join(sys.argv))