diff --git a/cmd/skopeo/completions.go b/cmd/skopeo/completions.go
index 672abc4b..20a2f9d1 100644
--- a/cmd/skopeo/completions.go
+++ b/cmd/skopeo/completions.go
@@ -18,5 +18,5 @@ func autocompleteSupportedTransports(cmd *cobra.Command, args []string, toComple
 			suggestions = append(suggestions, tp+":")
 		}
 	}
-	return suggestions, cobra.ShellCompDirectiveNoFileComp
+	return suggestions, cobra.ShellCompDirectiveNoFileComp | cobra.ShellCompDirectiveNoSpace
 }