diff --git a/legacy/eina/src/modules/mp/one_big/Makefile.am b/legacy/eina/src/modules/mp/one_big/Makefile.am
index fca326cd4c..69ecdf44b5 100644
--- a/legacy/eina/src/modules/mp/one_big/Makefile.am
+++ b/legacy/eina/src/modules/mp/one_big/Makefile.am
@@ -7,7 +7,8 @@ AM_CPPFLAGS = \
 -I$(top_srcdir)/src/lib \
 -I$(top_builddir)/src/lib \
 @EINA_CPPFLAGS@ \
-@EFL_EINA_BUILD@
+@EFL_EINA_BUILD@ \
+@VALGRIND_CFLAGS@
 
 if EINA_BUILD_ONE_BIG
 if !EINA_STATIC_BUILD_ONE_BIG
diff --git a/legacy/eina/src/modules/mp/one_big/eina_one_big.c b/legacy/eina/src/modules/mp/one_big/eina_one_big.c
index 1b810e698e..d84a7d9a0f 100644
--- a/legacy/eina/src/modules/mp/one_big/eina_one_big.c
+++ b/legacy/eina/src/modules/mp/one_big/eina_one_big.c
@@ -36,6 +36,10 @@
 #include "eina_mempool.h"
 #include "eina_trash.h"
 
+#ifndef NVALGRIND
+# include <valgrind/memcheck.h>
+#endif
+
 #ifdef DEBUG
 #include "eina_private.h"
 #include "eina_log.h"
@@ -89,6 +93,9 @@ eina_one_big_malloc(void *data, __UNUSED__ unsigned int size)
 
    if (pool->empty)
      {
+#ifndef NVALGRIND
+        VALGRIND_MAKE_MEM_DEFINED(pool->empty, pool->item_size);
+#endif
         mem = eina_trash_pop(&pool->empty);
         pool->usage++;
         goto on_exit;
@@ -102,6 +109,9 @@ eina_one_big_malloc(void *data, __UNUSED__ unsigned int size)
 	     eina_error_set(EINA_ERROR_OUT_OF_MEMORY);
 	     goto retry_smaller;
 	  }
+#ifndef NVALGRIND
+        VALGRIND_MAKE_MEM_NOACCESS(pool->base, pool->item_size * pool->max);
+#endif
      }
 
    if (pool->served < pool->max)
@@ -118,6 +128,9 @@ eina_one_big_malloc(void *data, __UNUSED__ unsigned int size)
       eina_error_set(EINA_ERROR_OUT_OF_MEMORY);
    else
       pool->over++;
+#ifndef NVALGRIND
+   VALGRIND_MAKE_MEM_NOACCESS(mem, pool->item_size);
+#endif
 
 on_exit:
 #ifdef EFL_HAVE_THREADS
@@ -126,6 +139,10 @@ on_exit:
 # else
    ReleaseMutex(pool->mutex);
 # endif
+#endif
+
+#ifndef NVALGRIND
+   VALGRIND_MEMPOOL_ALLOC(pool, mem, pool->item_size);
 #endif
    return mem;
 }
@@ -155,6 +172,10 @@ eina_one_big_free(void *data, void *ptr)
         pool->over--;
      }
 
+#ifndef NVALGRIND
+   VALGRIND_MEMPOOL_FREE(pool, ptr);
+#endif
+
 #ifdef EFL_HAVE_THREADS
 # ifdef EFL_HAVE_POSIX_THREADS
    pthread_mutex_unlock(&pool->mutex);
@@ -206,6 +227,10 @@ eina_one_big_init(const char *context,
 # endif
 #endif
 
+#ifndef NVALGRIND
+   VALGRIND_CREATE_MEMPOOL(pool, 0, 1);
+#endif
+
    return pool;
 }
 
@@ -230,6 +255,10 @@ eina_one_big_shutdown(void *data)
 
 #endif
 
+#ifndef NVALGRIND
+   VALGRIND_DESTROY_MEMPOOL(pool);
+#endif
+
    free(pool->base);
    free(pool);
 }