diff --git a/uncrustify-riot.cfg b/uncrustify-riot.cfg
index 46e76e1f4b045930e296425026bb950164b59c95..d67a512f6f221f692a8aec5e1424b456befbd5eb 100644
--- a/uncrustify-riot.cfg
+++ b/uncrustify-riot.cfg
@@ -1,9 +1,10 @@
-indent_with_tabs   = 0                 # 1=indent to level only, 2=indent with tabs
-input_tab_size     = 4                 # original tab size
-output_tab_size    = 4                 # new tab size
-indent_columns     = output_tab_size   #
-indent_label       = 1                 # pos: absolute col, neg: relative column
-indent_switch_case = 4                 # number
+indent_with_tabs        = 0                 # 1=indent to level only, 2=indent with tabs
+input_tab_size          = 4                 # original tab size
+output_tab_size         = 4                 # new tab size
+indent_columns          = output_tab_size   #
+indent_label            = 1                 # pos: absolute col, neg: relative column
+indent_switch_case      = 4                 # number
+indent_ternary_operator = 2                 # When the `:` is a continuation, indent it under `?`
 
 #
 # inter-symbol newlines