diff --git a/builder/builder-git.c b/builder/builder-git.c
index a440cfe95..049d5cc6c 100644
--- a/builder/builder-git.c
+++ b/builder/builder-git.c
@@ -304,7 +304,7 @@ builder_git_mirror_repo (const char     *repo_location,
       g_ptr_array_add (args, filename_tmp);
       g_ptr_array_add (args, NULL);
 
-      res = flatpak_spawnv (parent, NULL, error,
+      res = flatpak_spawnv (parent, NULL, 0, error,
                             (const gchar * const *) args->pdata);
 
       if (cached_git_dir && !update &&
diff --git a/builder/builder-source-archive.c b/builder/builder-source-archive.c
index ff9452b4e..c6a8099b8 100644
--- a/builder/builder-source-archive.c
+++ b/builder/builder-source-archive.c
@@ -383,7 +383,7 @@ unrpm (GFile   *dir,
       rpm_path, /* shell's $1 */
       NULL };
 
-  res = flatpak_spawnv (dir, NULL, error, argv);
+  res = flatpak_spawnv (dir, NULL, 0, error, argv);
 
   return res;
 }
diff --git a/builder/builder-source-patch.c b/builder/builder-source-patch.c
index 368ceb8dc..ff35a2ffc 100644
--- a/builder/builder-source-patch.c
+++ b/builder/builder-source-patch.c
@@ -222,7 +222,7 @@ patch (GFile      *dir,
   }
   g_ptr_array_add (args, NULL);
 
-  res = flatpak_spawnv (dir, NULL, error, (const char **) args->pdata);
+  res = flatpak_spawnv (dir, NULL, 0, error, (const char **) args->pdata);
 
   g_ptr_array_free (args, TRUE);
 
diff --git a/builder/builder-utils.c b/builder/builder-utils.c
index bbc43d378..388de9bc6 100644
--- a/builder/builder-utils.c
+++ b/builder/builder-utils.c
@@ -1597,7 +1597,7 @@ builder_maybe_host_spawnv (GFile                *dir,
   if (flatpak_is_in_sandbox ())
     return builder_host_spawnv (dir, output, error, argv);
 
-  return flatpak_spawnv (dir, output, error, argv);
+  return flatpak_spawnv (dir, output, 0, error, argv);
 }
 
 typedef struct {
diff --git a/common/flatpak-utils.c b/common/flatpak-utils.c
index 255097654..f6b9b40bd 100644
--- a/common/flatpak-utils.c
+++ b/common/flatpak-utils.c
@@ -1956,7 +1956,7 @@ flatpak_spawn (GFile       *dir,
     g_ptr_array_add (args, (gchar *) arg);
   g_ptr_array_add (args, NULL);
 
-  res = flatpak_spawnv (dir, output, error, (const gchar * const *) args->pdata);
+  res = flatpak_spawnv (dir, output, 0, error, (const gchar * const *) args->pdata);
 
   g_ptr_array_free (args, TRUE);
 
@@ -1966,6 +1966,7 @@ flatpak_spawn (GFile       *dir,
 gboolean
 flatpak_spawnv (GFile                *dir,
                 char                **output,
+                GSubprocessFlags      flags,
                 GError              **error,
                 const gchar * const  *argv)
 {
@@ -1980,7 +1981,9 @@ flatpak_spawnv (GFile                *dir,
   launcher = g_subprocess_launcher_new (0);
 
   if (output)
-    g_subprocess_launcher_set_flags (launcher, G_SUBPROCESS_FLAGS_STDOUT_PIPE);
+    flags |= G_SUBPROCESS_FLAGS_STDOUT_PIPE;
+
+  g_subprocess_launcher_set_flags (launcher, flags);
 
   if (dir)
     {
diff --git a/common/flatpak-utils.h b/common/flatpak-utils.h
index e18b33651..829c90349 100644
--- a/common/flatpak-utils.h
+++ b/common/flatpak-utils.h
@@ -405,6 +405,7 @@ gboolean            flatpak_spawn (GFile       *dir,
 
 gboolean            flatpak_spawnv (GFile                *dir,
                                     char                **output,
+                                    GSubprocessFlags      flags,
                                     GError              **error,
                                     const gchar * const  *argv);