diff --git a/sim.cpp b/sim.cpp
index 16be9c56..d1cd1b83 100644
--- a/sim.cpp
+++ b/sim.cpp
@@ -1909,9 +1909,9 @@ struct PerformAttack
             if (__builtin_expect(fd->bg_effects[fd->tapi][PassiveBGE::unity] && coalition_value, false)
                     && can_be_healed(att_status))
             {
-                _DEBUG_MSG(1, "Unity: %s heals itself for %u\n",
-                        status_description(att_status).c_str(), (coalition_value + 1)/2);
-                att_status->add_hp((coalition_value + 1)/2);
+                // Unity no longer uses the legacy half-heal scaling (issue #109).
+                _DEBUG_MSG(1, "Unity: %s heals itself for %u\n", status_description(att_status).c_str(), coalition_value);
+                att_status->add_hp(coalition_value);
             }
         }
 
diff --git a/tests/test_bges.csv b/tests/test_bges.csv
index 1ca77bd4..f047aa08 100644
--- a/tests/test_bges.csv
+++ b/tests/test_bges.csv
@@ -3,3 +3,4 @@
 Barracus the Traitor, Toxblade Squad,Alpha Cooperator ;Gaia the Purifier, Archmatron's Incisor#2,Alpha Cooperator;Virulence
 Broodmother Queen, Vile Darter#6,Alpha Cooperator;Barracus the Traitor, Parapet Welder#3,Alpha Cooperator ;Virulence
 Gaia the Purifier, Virklaw#4,Alpha Cooperator ;Arkadios Ultimate, Semyaza's Disciple#2,Alpha Cooperator;Virulence
+Barracus the Traitor, Toxblade Squad,Alpha Cooperator ;Gaia the Purifier, Archmatron's Incisor#2,Alpha Cooperator;Unity