diff --git a/src/character_body.cpp b/src/character_body.cpp
index 7cb2ae003a532..8cb8e4e9d6752 100644
--- a/src/character_body.cpp
+++ b/src/character_body.cpp
@@ -811,7 +811,7 @@ void Character::update_bodytemp()
             add_msg( m_bad,
                      _( "The wind is very strong; you should find some more wind-resistant clothing for your %s." ),
                      body_part_name( bp ) );
-        } else if( conv_temp <= BODYTEMP_COLD && windchill < units::from_kelvin_delta( -30 ) &&
+        } else if( conv_temp <= BODYTEMP_COLD && windchill < units::from_fahrenheit_delta( -30 ) &&
                    one_in( 50 ) ) {
             add_msg( m_bad, _( "Your clothing is not providing enough protection from the wind for your %s!" ),
                      body_part_name( bp ) );