diff --git a/dda_lookahead.c b/dda_lookahead.c
index 76fab02..e36af36 100644
--- a/dda_lookahead.c
+++ b/dda_lookahead.c
@@ -17,15 +17,18 @@
 #include "timer.h"
 #include "delay.h"
 #include "dda_queue.h"
-#include "debug.h"
 #include "sersendf.h"
 #include "pinio.h"
 #include "memory_barrier.h"
 
 extern uint8_t use_lookahead;
 
-uint32_t lookahead_joined = 0;      // Total number of moves joined together
-uint32_t lookahead_timeout = 0;     // Moves that did not compute in time to be actually joined
+#ifdef DEBUG
+  // Total number of moves joined together.
+  uint32_t lookahead_joined = 0;
+  // Moves that did not compute in time to be actually joined.
+  uint32_t lookahead_timeout = 0;
+#endif
 
 /// \var maximum_jerk_P
 /// \brief maximum allowed feedrate jerk on each axis
@@ -300,7 +303,9 @@ void dda_join_moves(DDA *prev, DDA *current) {
 
     ATOMIC_START
       // Evaluation: determine how we did...
-      lookahead_joined++;
+      #ifdef DEBUG
+        lookahead_joined++;
+      #endif
 
       // Determine if we are fast enough - if not, just leave the moves
       // Note: to test if the previous move was already executed and replaced by a new
@@ -321,7 +326,9 @@ void dda_join_moves(DDA *prev, DDA *current) {
     // If we were not fast enough, any feedback will happen outside the atomic block:
     if(timeout) {
       sersendf_P(PSTR("// Notice: look ahead not fast enough\n"));
-      lookahead_timeout++;
+      #ifdef DEBUG
+        lookahead_timeout++;
+      #endif
     }
   }
 }
diff --git a/dda_lookahead.h b/dda_lookahead.h
index 7edafc1..4dc6f98 100644
--- a/dda_lookahead.h
+++ b/dda_lookahead.h
@@ -4,6 +4,7 @@
 #include <stdint.h>
 #include "config_wrapper.h"
 #include "dda.h"
+#include "debug.h"
 
 #ifdef LOOKAHEAD
 
@@ -28,8 +29,10 @@ void dda_find_crossing_speed(DDA *prev, DDA *current);
 void dda_join_moves(DDA *prev, DDA *current);
 
 // Debug counters
-extern uint32_t lookahead_joined;
-extern uint32_t lookahead_timeout;
+#ifdef DEBUG
+  extern uint32_t lookahead_joined;
+  extern uint32_t lookahead_timeout;
+#endif
 
 #endif /* LOOKAHEAD */
 #endif /* DDA_LOOKAHEAD_H_ */