diff --git a/tests/char_volume_test.cpp b/tests/char_volume_test.cpp
index 20e3c2b380fd0..8c5d50b861e75 100644
--- a/tests/char_volume_test.cpp
+++ b/tests/char_volume_test.cpp
@@ -9,6 +9,7 @@
 #include "map_helpers.h"
 #include "mutation.h"
 #include "player_helpers.h"
+#include "units.h"
 #include "vehicle.h"
 #include "veh_type.h"
 
@@ -42,25 +43,23 @@ TEST_CASE( "character_baseline_volumes", "[volume]" )
 {
     clear_avatar();
     Character &you = get_player_character();
+    you.set_stored_kcal( you.get_healthy_kcal() );
     REQUIRE( you.get_mutations().empty() );
     REQUIRE( you.height() == 175 );
-    CHECK( ( you.get_base_volume() > 55_liter && you.get_base_volume() < 80_liter ) );
+    REQUIRE( you.bodyweight() == 76562390_milligram );
+    CHECK( you.get_base_volume() == 73485_ml );
 
     REQUIRE( your_height_with_trait( trait_SMALL2 ) == 70 );
-    CHECK( ( your_volume_with_trait( trait_SMALL2 ) > 20_liter &&
-             your_volume_with_trait( trait_SMALL2 ) < 30_liter ) );
+    CHECK( your_volume_with_trait( trait_SMALL2 ) == 23326_ml );
 
     REQUIRE( your_height_with_trait( trait_SMALL ) == 122 );
-    CHECK( ( your_volume_with_trait( trait_SMALL ) > 40_liter &&
-             your_volume_with_trait( trait_SMALL ) < 50_liter ) );
+    CHECK( your_volume_with_trait( trait_SMALL ) == 42476_ml );
 
     REQUIRE( your_height_with_trait( trait_LARGE ) == 227 );
-    CHECK( ( your_volume_with_trait( trait_LARGE ) > 100_liter &&
-             your_volume_with_trait( trait_LARGE ) < 120_liter ) );
+    CHECK( your_volume_with_trait( trait_LARGE ) == 116034_ml );
 
     REQUIRE( your_height_with_trait( trait_HUGE ) == 280 );
-    CHECK( ( your_volume_with_trait( trait_HUGE ) > 150_liter &&
-             your_volume_with_trait( trait_HUGE ) < 200_liter ) );
+    CHECK( your_volume_with_trait( trait_HUGE ) == 156228_ml );
 }
 
 TEST_CASE( "character_at_volume_can_or_cannot_enter_vehicle", "[volume]" )
@@ -109,7 +108,7 @@ TEST_CASE( "character_at_volume_can_or_cannot_enter_vehicle", "[volume]" )
     cramped = false;
 
     // Try the cramped aisle with a rock again, but now we are tiny, so it is easy.
-    CHECK( your_volume_with_trait( trait_SMALL2 ) < 30_liter );
+    CHECK( your_volume_with_trait( trait_SMALL2 ) == 23326_ml );
     you.setpos( test_pos ); // set our position again, clear_avatar() moved us
     dest_loc = dest_loc + tripoint_north;
     CHECK( you.can_move_to_vehicle_tile( dest_loc, cramped ) );
@@ -117,7 +116,7 @@ TEST_CASE( "character_at_volume_can_or_cannot_enter_vehicle", "[volume]" )
     dest_loc = you.get_location(); //reset
 
     // Same aisle, but now we have HUGE GUTS. We will never fit.
-    CHECK( your_volume_with_trait( trait_HUGE ) > 150_liter );
+    CHECK( your_volume_with_trait( trait_HUGE ) == 156228_ml );
     you.setpos( test_pos ); // set our position again, clear_avatar() moved us
     dest_loc = dest_loc + tripoint_north;
     CHECK( !you.can_move_to_vehicle_tile( dest_loc ) );