diff --git a/tools/vsh.c b/tools/vsh.c
index 8649305b0c..2b78919184 100644
--- a/tools/vsh.c
+++ b/tools/vsh.c
@@ -71,9 +71,6 @@
 const vshCmdGrp *cmdGroups;
 const vshCmdDef *cmdSet;
 
-/* Bypass header poison */
-#undef strdup
-
 
 /* simple handler for oom conditions */
 static void
@@ -164,9 +161,6 @@ _vshStrdup(vshControl *ctl, const char *s, const char *filename, int line)
     exit(EXIT_FAILURE);
 }
 
-/* Poison the raw allocating identifiers in favor of our vsh variants.  */
-#define strdup use_vshStrdup_instead_of_strdup
-
 int
 vshNameSorter(const void *a, const void *b)
 {
diff --git a/tools/vsh.h b/tools/vsh.h
index f738a6f118..8d6739724c 100644
--- a/tools/vsh.h
+++ b/tools/vsh.h
@@ -453,16 +453,6 @@ char *_vshStrdup(vshControl *ctl, const char *s, const char *filename,
                  int line);
 # define vshStrdup(_ctl, _s)    _vshStrdup(_ctl, _s, __FILE__, __LINE__)
 
-/* Poison the raw allocating identifiers in favor of our vsh variants.  */
-# undef malloc
-# undef calloc
-# undef realloc
-# undef strdup
-# define malloc use_vshMalloc_instead_of_malloc
-# define calloc use_vshCalloc_instead_of_calloc
-# define realloc use_vshRealloc_instead_of_realloc
-# define strdup use_vshStrdup_instead_of_strdup
-
 /* Macros to help dealing with mutually exclusive options. */
 
 /* VSH_EXCLUSIVE_OPTIONS_EXPR: