diff --git a/core/src/mindustry/world/blocks/units/UnitAssembler.java b/core/src/mindustry/world/blocks/units/UnitAssembler.java
index 8494e6a560..c3fa550c58 100644
--- a/core/src/mindustry/world/blocks/units/UnitAssembler.java
+++ b/core/src/mindustry/world/blocks/units/UnitAssembler.java
@@ -241,8 +241,8 @@ public class UnitAssembler extends PayloadBlock{
 
         public boolean moduleFits(Block other, float ox, float oy, int rotation){
             float
-            dx = ox + Geometry.d4x(rotation) * (other.size/2 + 1) * tilesize,
-            dy = oy + Geometry.d4y(rotation) * (other.size/2 + 1) * tilesize;
+            dx = ox + Geometry.d4x(rotation) * (other.size/2f + 0.5f) * tilesize,
+            dy = oy + Geometry.d4y(rotation) * (other.size/2f + 0.5f) * tilesize;
 
             Vec2 spawn = getUnitSpawn();