diff --git a/core/assets/contributors b/core/assets/contributors
new file mode 100644
index 0000000000..7b5fb43f46
--- /dev/null
+++ b/core/assets/contributors
@@ -0,0 +1,73 @@
+Prosta4okua
+Timmeey86
+Epowerj
+Baltazár Radics
+Dexapnow
+Milinai
+키에르
+Luxray5474
+Leone25
+Gureumi
+VizardAlpha
+LQ
+Commodore64x
+iczero
+Krzysztof Skrzętnicki
+Baramos666
+theshadowknight
+elmenda452
+Predator127
+Sonnicon
+CinExPL
+toushangyouxiang
+xgamezs
+Skybbles // L5474
+William So
+beito
+BeefEX
+Lorex
+laohuaji233
+CrazyBearTR
+Zachary
+Fenr1r
+Jaiun Lee
+Gab_351
+Carter Gale
+Jan Polák
+JustYanns
+BasedUser
+BLucky-gh
+DinoWattz
+Jae
+angelickite
+ScriptHosT12
+Senventise
+SkeptiC
+Deyvid67
+Damlon
+DaGamerFiles
+Trigg
+Uriel
+VXF
+Valen. H
+Valentin Sonin
+Clarence "Sparr" Risher
+bei2
+AceEllysium
+Cedric L'homme
+indielm
+Ameb
+player20033
+Ignacy
+J-VdS
+Kenny
+L5474
+Franciszek Zaranowicz
+Andreas Heiskanen
+Doyoung Gwak
+MMG
+Math2128
+Michael Plotke
+Niko
+Paul T
+Dominik
\ No newline at end of file
diff --git a/core/src/io/anuke/mindustry/entities/type/base/BuilderDrone.java b/core/src/io/anuke/mindustry/entities/type/base/BuilderDrone.java
index 4b75d6e734..f3c4e4bceb 100644
--- a/core/src/io/anuke/mindustry/entities/type/base/BuilderDrone.java
+++ b/core/src/io/anuke/mindustry/entities/type/base/BuilderDrone.java
@@ -185,7 +185,7 @@ public class BuilderDrone extends BaseDrone implements BuilderTrait{
                 }
             }
 
-            if(isRebuild()){
+            if(isRebuild() && !isBuilding()){
                 TeamData data = Vars.state.teams.get(team);
                 if(!data.brokenBlocks.isEmpty()){
                     long block = data.brokenBlocks.removeLast();