diff --git a/src/platforms/ros/nodes/mc_mixer/mc_mixer.cpp b/src/platforms/ros/nodes/mc_mixer/mc_mixer.cpp
index 3867d448e6..1073833c08 100644
--- a/src/platforms/ros/nodes/mc_mixer/mc_mixer.cpp
+++ b/src/platforms/ros/nodes/mc_mixer/mc_mixer.cpp
@@ -68,11 +68,11 @@ private:
 	unsigned _rotor_count;
 
 	struct {
-		float control[6];
+		float control[8];
 	} inputs;
 
 	struct  {
-		float control[6];
+		float control[8];
 	} outputs;
 
 	bool _armed;