diff --git a/ceo/cli/utils.py b/ceo/cli/utils.py
index 98aa23f..6a8c73a 100644
--- a/ceo/cli/utils.py
+++ b/ceo/cli/utils.py
@@ -28,6 +28,9 @@ def print_colon_kv(pairs: List[Tuple[str, str]]):
     key1:    value1
     key1000: value2
     """
+    if len(pairs) == 0:
+        return
+
     maxlen = max(len(key) for key, val in pairs)
     for key, val in pairs:
         if key != '':