diff --git a/C/init.c b/C/init.c
index a87f3091a..5ef68a94e 100644
--- a/C/init.c
+++ b/C/init.c
@@ -203,10 +203,6 @@ int  Yap_Portray_delays = FALSE;
 #endif
 #endif
 
-#ifdef LOW_LEVEL_TRACER
-int Yap_do_low_level_trace = FALSE;
-#endif
-
 #define	xfx	1
 #define	xfy	2
 #define	yfx	3
@@ -1025,6 +1021,7 @@ InitCodes(void)
   Yap_heap_regs->expand_op_code = Yap_opcode(_expand_index);
   INIT_LOCK(Yap_heap_regs->expand_clauses_list_lock);
 #ifdef LOW_LEVEL_TRACER
+  Yap_heap_regs->yap_do_low_level_trace = FALSE;
   INIT_LOCK(Yap_heap_regs->low_level_trace_lock);
 #endif
   Yap_heap_regs->expand_clauses_first = NULL;
diff --git a/H/Heap.h b/H/Heap.h
index 1f243237c..f60002c29 100644
--- a/H/Heap.h
+++ b/H/Heap.h
@@ -369,6 +369,7 @@ typedef struct various_codes {
   lockvar  dbterms_list_lock;        /* protect DBTermList */
   int      heap_top_owner;
 #ifdef LOW_LEVEL_TRACER
+  int yap_do_low_level_trace;
   lockvar  low_level_trace_lock;
 #endif
 #endif
@@ -475,6 +476,9 @@ extern struct various_codes *Yap_heap_regs;
 
 #define  Yap_HoleSize            Yap_heap_regs->hole_size
 #define  Yap_av                  Yap_heap_regs->av_
+#if defined(LOW_LEVEL_TRACER)
+#define  Yap_do_low_level_trace  Yap_heap_regs->yap_do_low_level_trace
+#endif
 #define  Yap_ExecutionMode       Yap_heap_regs->execution_mode
 #define  Yap_AttsSize            Yap_heap_regs->atts_size
 #define  Yap_ClauseSpace         Yap_heap_regs->clause_space
diff --git a/H/tracer.h b/H/tracer.h
index 6c9aa6518..d2e49b739 100644
--- a/H/tracer.h
+++ b/H/tracer.h
@@ -31,8 +31,6 @@ void	STD_PROTO(low_level_trace,(yap_low_level_port, PredEntry *, CELL *));
 void	STD_PROTO(Yap_InitLowLevelTrace,(void));
 void	STD_PROTO(toggle_low_level_trace,(void));
 
-extern int Yap_do_low_level_trace;
-
 #endif