diff --git a/gio/gwin32appinfo.c b/gio/gwin32appinfo.c
index 499bbb3..749b282 100644
--- a/gio/gwin32appinfo.c
+++ b/gio/gwin32appinfo.c
@@ -32,6 +32,7 @@
 #include <glib/gstdio.h>
 #include "glibintl.h"
 #include <gio/gwin32registrykey.h>
+#include "gstrfuncsprivate.h"
 
 #include <windows.h>
 
@@ -472,7 +473,7 @@ g_wcsdup (const gunichar2 *str, gssize str_size)
       str_size = wcslen (str) + 1;
       str_size *= sizeof (gunichar2);
     }
-  return g_memdup (str, str_size);
+  return g_memdup2 (str, str_size);
 }
 
 #define URL_ASSOCIATIONS L"HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\Shell\\Associations\\UrlAssociations\\"
diff --git a/glib/ghash.c b/glib/ghash.c
index d475e6d..608d136 100644
--- a/glib/ghash.c
+++ b/glib/ghash.c
@@ -968,7 +968,7 @@ g_hash_table_insert_node (GHashTable *hash_table,
    * split the table.
    */
   if (G_UNLIKELY (hash_table->keys == hash_table->values && hash_table->keys[node_index] != new_value))
-    hash_table->values = g_memdup (hash_table->keys, sizeof (gpointer) * hash_table->size);
+    hash_table->values = g_memdup2 (hash_table->keys, sizeof (gpointer) * hash_table->size);
 
   /* Step 3: Actually do the write */
   hash_table->values[node_index] = new_value;
diff --git a/glib/tests/gvariant.c b/glib/tests/gvariant.c
index c4a996c..5903b69 100644
--- a/glib/tests/gvariant.c
+++ b/glib/tests/gvariant.c
@@ -14,6 +14,7 @@
 #include "config.h"
 
 #include <glib/gvariant-internal.h>
+#include <glib/gstrfuncsprivate.h>
 #include <string.h>
 #include <stdlib.h>
 #include <glib.h>
@@ -4673,7 +4674,7 @@ test_normal_checking_tuples (void)
   GVariant *variant = NULL;
   GVariant *normal_variant = NULL;
 
-  aligned_data = g_memdup (data, size); /* guarantee alignment */
+  aligned_data = g_memdup2 (data, size); /* guarantee alignment */
   variant = g_variant_new_from_data (G_VARIANT_TYPE_VARIANT, aligned_data, size,
                                      FALSE, NULL, NULL);
   g_assert_nonnull (variant);
@@ -4802,7 +4803,7 @@ test_normal_checking_array_offsets (void)
   GVariant *variant = NULL;
   GVariant *normal_variant = NULL;
 
-  aligned_data = g_memdup (data, size); /* guarantee alignment */
+  aligned_data = g_memdup2 (data, size); /* guarantee alignment */
   variant = g_variant_new_from_data (G_VARIANT_TYPE_VARIANT, aligned_data, size,
                                      FALSE, NULL, NULL);
   g_assert_nonnull (variant);
@@ -4829,7 +4830,7 @@ test_normal_checking_tuple_offsets (void)
   GVariant *variant = NULL;
   GVariant *normal_variant = NULL;
 
-  aligned_data = g_memdup (data, size); /* guarantee alignment */
+  aligned_data = g_memdup2 (data, size); /* guarantee alignment */
   variant = g_variant_new_from_data (G_VARIANT_TYPE_VARIANT, aligned_data,
                                      size, FALSE, NULL, NULL);
   g_assert_nonnull (variant);
@@ -4856,7 +4857,7 @@ test_normal_checking_empty_object_path (void)
   GVariant *variant = NULL;
   GVariant *normal_variant = NULL;
 
-  aligned_data = g_memdup (data, size); /* guarantee alignment */
+  aligned_data = g_memdup2 (data, size); /* guarantee alignment */
   variant = g_variant_new_from_data (G_VARIANT_TYPE_VARIANT, aligned_data, size,
                                      FALSE, NULL, NULL);
   g_assert_nonnull (variant);