diff --git a/src/main/java/com/simibubi/create/content/kinetics/deployer/DeployerHandler.java b/src/main/java/com/simibubi/create/content/kinetics/deployer/DeployerHandler.java
index c0319a8f3..a6189b298 100644
--- a/src/main/java/com/simibubi/create/content/kinetics/deployer/DeployerHandler.java
+++ b/src/main/java/com/simibubi/create/content/kinetics/deployer/DeployerHandler.java
@@ -300,8 +300,8 @@ public class DeployerHandler {
 			return;
 		if (useItem == DENY)
 			return;
-		if (item instanceof BlockItem && !(item instanceof CartAssemblerBlockItem)
-			&& !clickedState.canBeReplaced(new BlockPlaceContext(itemusecontext)))
+		if (item instanceof CartAssemblerBlockItem
+			&& clickedState.canBeReplaced(new BlockPlaceContext(itemusecontext)))
 			return;
 
 		// Reposition fire placement for convenience
diff --git a/src/main/java/com/simibubi/create/foundation/mixin/BlockItemMixin.java b/src/main/java/com/simibubi/create/foundation/mixin/BlockItemMixin.java
new file mode 100644
index 000000000..a9c6d514b
--- /dev/null
+++ b/src/main/java/com/simibubi/create/foundation/mixin/BlockItemMixin.java
@@ -0,0 +1,29 @@
+package com.simibubi.create.foundation.mixin;
+
+import com.simibubi.create.content.kinetics.deployer.DeployerFakePlayer;
+
+import com.simibubi.create.foundation.mixin.accessor.UseOnContextAccessor;
+
+import net.minecraft.world.InteractionResult;
+import net.minecraft.world.item.BlockItem;
+
+import net.minecraft.world.item.context.BlockPlaceContext;
+
+import net.minecraft.world.level.block.Blocks;
+import net.minecraft.world.level.block.state.BlockState;
+
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+@Mixin(BlockItem.class)
+public class BlockItemMixin {
+	@Inject(method = "place", at = @At("HEAD"), cancellable = true)
+	private void create$fixDeployerPlacement(BlockPlaceContext pContext, CallbackInfoReturnable<InteractionResult> cir) {
+		BlockState state = pContext.getLevel().getBlockState(((UseOnContextAccessor) pContext).create$getHitResult().getBlockPos());
+		if (state != Blocks.AIR.defaultBlockState() && pContext.getPlayer() instanceof DeployerFakePlayer) {
+			cir.setReturnValue(InteractionResult.PASS);
+		}
+	}
+}
diff --git a/src/main/java/com/simibubi/create/foundation/mixin/accessor/UseOnContextAccessor.java b/src/main/java/com/simibubi/create/foundation/mixin/accessor/UseOnContextAccessor.java
new file mode 100644
index 000000000..87f2929e0
--- /dev/null
+++ b/src/main/java/com/simibubi/create/foundation/mixin/accessor/UseOnContextAccessor.java
@@ -0,0 +1,14 @@
+package com.simibubi.create.foundation.mixin.accessor;
+
+import net.minecraft.world.item.context.UseOnContext;
+
+import net.minecraft.world.phys.BlockHitResult;
+
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.gen.Invoker;
+
+@Mixin(UseOnContext.class)
+public interface UseOnContextAccessor {
+	@Invoker("getHitResult")
+	BlockHitResult create$getHitResult();
+}
diff --git a/src/main/resources/create.mixins.json b/src/main/resources/create.mixins.json
index a434994ce..9187472d9 100644
--- a/src/main/resources/create.mixins.json
+++ b/src/main/resources/create.mixins.json
@@ -6,6 +6,7 @@
   "compatibilityLevel": "JAVA_17",
   "refmap": "create.refmap.json",
   "mixins": [
+    "BlockItemMixin",
     "ClientboundMapItemDataPacketMixin",
     "ContraptionDriverInteractMixin",
     "CustomItemUseEffectsMixin",
@@ -23,7 +24,8 @@
     "accessor.LivingEntityAccessor",
     "accessor.NbtAccounterAccessor",
     "accessor.ServerLevelAccessor",
-    "accessor.SystemReportAccessor"
+    "accessor.SystemReportAccessor",
+    "accessor.UseOnContextAccessor"
   ],
   "client": [
     "accessor.AgeableListModelAccessor",