diff --git a/input.cpp b/input.cpp
index 5845af1a0..4be33ae31 100644
--- a/input.cpp
+++ b/input.cpp
@@ -350,7 +350,7 @@ int input_init()
     update_fish_term256();
 
 	/* If we have no keybindings, add a few simple defaults */
-	if( mapping_list.size() )
+	if( mapping_list.empty() )
 	{
 		input_mapping_add( L"", L"self-insert" );
 		input_mapping_add( L"\n", L"execute" );