diff --git a/main.c b/main.c
index 3d3d9fc..d4963bd 100644
--- a/main.c
+++ b/main.c
@@ -348,6 +348,7 @@ const uint8_t switch_timer_index[STATE_START_COUNT]= { 13, 0 };
 /** contains the port assignments for each interval */
 uint8_t switch_state[STATE_COUNT][PORT_COUNT];
 
+uint8_t switch_state_new[STATE_COUNT][PORT_COUNT];
 /**
  * Three bytes have to be received for a full command. This enum is used to
  * indicate what part of the command we are waiting for.
@@ -401,10 +402,10 @@ void set_brightness(uint8_t channel, uint16_t brightness){
         // walk through all states...
         if (brightness & 1) {
             // set the bit if it needs to be set in this state
-            switch_state[i][port] |= mask;
+            switch_state_new[i][port] |= mask;
         } else {
             // clear it otherwise
-            switch_state[i][port] &= ~mask;
+            switch_state_new[i][port] &= ~mask;
         }
         // shift the value to look at the next bit
         brightness >>= 1;
@@ -536,6 +537,12 @@ int main(void) {
                 }
             }
         }
+        for(state_number= 0; state_number < STATE_COUNT; state_number++) {
+            for(port= 0; port < PORT_COUNT; port++) {
+                switch_state[state_number][port]=
+                    switch_state_new[state_number][port];
+            }
+        }
     }
     return 0;
 }