diff --git a/src/backend/file/test/test-xml-account.c b/src/backend/file/test/test-xml-account.c
index e4b3e81c03..56d4d0b72e 100644
--- a/src/backend/file/test/test-xml-account.c
+++ b/src/backend/file/test/test-xml-account.c
@@ -247,7 +247,7 @@ test_account(int i, Account *test_act)
         
     filename1 = g_strdup_printf("test_file_XXXXXX");
         
-    fd = mkstemp(filename1);
+    fd = g_mkstemp(filename1);
         
     write_dom_node_to_file(test_node, fd);
 
diff --git a/src/backend/file/test/test-xml-commodity.c b/src/backend/file/test/test-xml-commodity.c
index d4eca06584..fd0d140dd9 100644
--- a/src/backend/file/test/test-xml-commodity.c
+++ b/src/backend/file/test/test-xml-commodity.c
@@ -178,7 +178,7 @@ test_generation(void)
         
         filename1 = g_strdup_printf("test_file_XXXXXX");
         
-        fd = mkstemp(filename1);
+        fd = g_mkstemp(filename1);
         
         write_dom_node_to_file(test_node, fd);
 
diff --git a/src/backend/file/test/test-xml-pricedb.c b/src/backend/file/test/test-xml-pricedb.c
index 38c82bc201..4e27b7d13f 100644
--- a/src/backend/file/test/test-xml-pricedb.c
+++ b/src/backend/file/test/test-xml-pricedb.c
@@ -84,7 +84,7 @@ test_db (int i, GNCPriceDB *db)
 
   filename1 = g_strdup_printf ("test_file_XXXXXX");
         
-  fd = mkstemp (filename1);
+  fd = g_mkstemp (filename1);
         
   write_dom_node_to_file (test_node, fd);
 
diff --git a/src/backend/file/test/test-xml-transaction.c b/src/backend/file/test/test-xml-transaction.c
index f875fd562b..97c6f22fee 100644
--- a/src/backend/file/test/test-xml-transaction.c
+++ b/src/backend/file/test/test-xml-transaction.c
@@ -429,7 +429,7 @@ test_transaction(void)
         
         filename1 = g_strdup_printf("test_file_XXXXXX");
         
-        fd = mkstemp(filename1);
+        fd = g_mkstemp(filename1);
         
         write_dom_node_to_file(test_node, fd);