diff --git a/server/app.py b/server/app.py
index 45eab3d..392d5eb 100644
--- a/server/app.py
+++ b/server/app.py
@@ -136,7 +136,7 @@ def mqtt_publisher(ti_queue):
                         if artNetPacket.universe == int(index_row[1]):
                             dmx_address = int(index_row[2])
                             #Define RGB values per pixel
-                            p1_g, p1_b, p1_r, p2_g, p2_b, p2_r, p3_g, p3_b, p3_r, p4_g, p4_b, p4_r, p5_g, p5_b, p5_r, p6_g, p6_b, p6_r = artNetPacket.data[dmx_address], artNetPacket.data[dmx_address+1], artNetPacket.data[dmx_address+2], artNetPacket.data[dmx_address+3], artNetPacket.data[dmx_address+4], artNetPacket.data[dmx_address+5], artNetPacket.data[dmx_address+6], artNetPacket.data[dmx_address+7], artNetPacket.data[dmx_address+8], artNetPacket.data[dmx_address+9], artNetPacket.data[dmx_address+10], artNetPacket.data[dmx_address+11], artNetPacket.data[dmx_address+12], artNetPacket.data[dmx_address+13], artNetPacket.data[dmx_address+14], artNetPacket.data[dmx_address+15], artNetPacket.data[dmx_address+16], artNetPacket.data[dmx_address+17]
+                            p1_g, p1_b, p1_r, p2_g, p2_b, p2_r, p3_g, p3_b, p3_r, p4_g, p4_b, p4_r, p5_g, p5_b, p5_r, p6_g, p6_b, p6_r = artNetPacket.data[dmx_address-1], artNetPacket.data[dmx_address], artNetPacket.data[dmx_address+1], artNetPacket.data[dmx_address+2], artNetPacket.data[dmx_address+3], artNetPacket.data[dmx_address+4], artNetPacket.data[dmx_address+5], artNetPacket.data[dmx_address+6], artNetPacket.data[dmx_address+7], artNetPacket.data[dmx_address+8], artNetPacket.data[dmx_address+9], artNetPacket.data[dmx_address+10], artNetPacket.data[dmx_address+11], artNetPacket.data[dmx_address+12], artNetPacket.data[dmx_address+13], artNetPacket.data[dmx_address+14], artNetPacket.data[dmx_address+15], artNetPacket.data[dmx_address+16]
 
                             # Pixel topics
                             p1_topic = "tube-"+str(index_row[0])+"/pixel_colors"