diff --git a/src/p_spec.c b/src/p_spec.c
index 3d7fda055..d658a7648 100644
--- a/src/p_spec.c
+++ b/src/p_spec.c
@@ -9390,7 +9390,7 @@ void P_StartQuakeFromMobj(tic_t time, fixed_t intensity, fixed_t radius, mobj_t
 	quake->epicenter = (mappoint_t *)Z_Malloc(sizeof(mappoint_t), PU_LEVEL, NULL);
 	quake->epicenter->x = mobj->x;
 	quake->epicenter->y = mobj->y;
-	quake->epicenter->z = mobj->z;
+	quake->epicenter->z = mobj->z + (mobj->height / 2);
 }
 
 void P_DoQuakeOffset(UINT8 view, mappoint_t *viewPos, mappoint_t *offset)
diff --git a/src/p_tick.c b/src/p_tick.c
index 737ff9ba2..f411aa382 100644
--- a/src/p_tick.c
+++ b/src/p_tick.c
@@ -1026,7 +1026,7 @@ void P_Ticker(boolean run)
 			{
 				quake->epicenter->x = quake->mobj->x;
 				quake->epicenter->y = quake->mobj->y;
-				quake->epicenter->z = quake->mobj->z;
+				quake->epicenter->z = quake->mobj->z + (quake->mobj->height / 2);
 			}
 
 			quake = quake->next;