diff --git a/src/unit/unit_draw.cpp b/src/unit/unit_draw.cpp
index ee1f01ee7..16b9208ae 100644
--- a/src/unit/unit_draw.cpp
+++ b/src/unit/unit_draw.cpp
@@ -1942,7 +1942,7 @@ global void DrawUnit(const Unit* unit)
 }
 
 /**
-**		FIXME: docu
+**  FIXME: docu
 */
 local int DrawLevelCompare(const void* v1, const void* v2) {
 
@@ -1950,8 +1950,7 @@ local int DrawLevelCompare(const void* v1, const void* v2) {
 	const Unit* c2;
 	int drawlevel1;
 	int drawlevel2;
-    int diffpos;
-    
+	int diffpos;
 
 	c1 = *(Unit**)v1;
 	c2 = *(Unit**)v2;
@@ -1967,12 +1966,12 @@ local int DrawLevelCompare(const void* v1, const void* v2) {
 		drawlevel2 = c2->Type->DrawLevel;
 	}
 	if (drawlevel1 == drawlevel2) {
-        // diffpos compares unit's Y positions (bottom of sprite) on the map and uses 
-        // X position in case Y positions are equal.
-        // FIXME: Use BoxHeight?
-        diffpos = c1->Y * TileSizeY + c1->Type->Height + c1->IY - c2->Y * TileSizeY - 
-            c2->Type->Height - c2->IY; 
-        return diffpos ? diffpos : c1->X - c2->X ? c1->X - c2->X : c1->Slot - c2->Slot; 
+		// diffpos compares unit's Y positions (bottom of sprite) on the map
+		// and uses X position in case Y positions are equal.
+		// FIXME: Use BoxHeight?
+		diffpos = c1->Y * TileSizeY + c1->IY + c1->Type->Height -
+			(c2->Y * TileSizeY + c2->IY + c2->Type->Height);
+		return diffpos ? diffpos : c1->X - c2->X ? c1->X - c2->X : c1->Slot - c2->Slot;
 	} else {
 		return drawlevel1 <= drawlevel2 ? -1 : 1;
 	}