diff --git a/C/atomic.c b/C/atomic.c
index aa7ff51e3..45c21290b 100644
--- a/C/atomic.c
+++ b/C/atomic.c
@@ -2115,4 +2115,8 @@ Yap_InitAtomPreds(void)
   Yap_InitCPred("atomics_to_string", 2, p_atomics_to_string2, 0);
   Yap_InitCPred("atomics_to_string", 3, p_atomics_to_string3, 0);
   Yap_InitCPred("get_string_code", 3, p_get_string_code3, 0);
+  /* hiding and unhiding some predicates */
+  Yap_InitCPred("hide", 1, p_hide, SafePredFlag|SyncPredFlag);
+  Yap_InitCPred("unhide", 1, p_unhide, SafePredFlag|SyncPredFlag);
+  Yap_InitCPred("$hidden", 1, p_hidden, SafePredFlag|SyncPredFlag);
 }
diff --git a/C/stdpreds.c b/C/stdpreds.c
index 639205ce7..e0df96d1f 100755
--- a/C/stdpreds.c
+++ b/C/stdpreds.c
@@ -1920,10 +1920,6 @@ Yap_InitCPreds(void)
   /* Accessing and changing the flags for a predicate */
   Yap_InitCPred("$flags", 4, p_flags, SyncPredFlag);
   Yap_InitCPred("$set_flag", 4, p_set_flag, SyncPredFlag);
-  /* hiding and unhiding some predicates */
-  Yap_InitCPred("hide", 1, p_hide, SafePredFlag|SyncPredFlag);
-  Yap_InitCPred("unhide", 1, p_unhide, SafePredFlag|SyncPredFlag);
-  Yap_InitCPred("$hidden", 1, p_hidden, SafePredFlag|SyncPredFlag);
   Yap_InitCPred("$has_yap_or", 0, p_has_yap_or, SafePredFlag|SyncPredFlag);
   Yap_InitCPred("$has_eam", 0, p_has_eam, SafePredFlag|SyncPredFlag);
 #ifndef YAPOR