diff --git a/gst/gst.c b/gst/gst.c
index 77dc44daa4..be586a1fc7 100644
--- a/gst/gst.c
+++ b/gst/gst.c
@@ -1148,7 +1148,7 @@ gst_version (guint * major, guint * minor, guint * micro, guint * nano)
  */
 
 gchar *
-gst_version_string ()
+gst_version_string (void)
 {
   guint major, minor, micro, nano;
 
diff --git a/gst/gstpluginloader.c b/gst/gstpluginloader.c
index fb18f62ab7..d5e77100d8 100644
--- a/gst/gstpluginloader.c
+++ b/gst/gstpluginloader.c
@@ -432,7 +432,7 @@ plugin_loader_cleanup_child (GstPluginLoader * l)
 }
 
 gboolean
-_gst_plugin_loader_client_run ()
+_gst_plugin_loader_client_run (void)
 {
   GstPluginLoader *l;
 
diff --git a/gst/gstregistry.c b/gst/gstregistry.c
index 4e27f5da03..6d3b371cde 100644
--- a/gst/gstregistry.c
+++ b/gst/gstregistry.c
@@ -1256,7 +1256,7 @@ gst_registry_get_feature_list_by_plugin (GstRegistry * registry,
 
 /* Unref and delete the default registry */
 void
-_priv_gst_registry_cleanup ()
+_priv_gst_registry_cleanup (void)
 {
   GstRegistry *registry;
 
diff --git a/tools/gst-inspect.c b/tools/gst-inspect.c
index 4f2723d152..5f0cbfe5c1 100644
--- a/tools/gst-inspect.c
+++ b/tools/gst-inspect.c
@@ -942,7 +942,7 @@ print_children_info (GstElement * element)
 }
 
 static void
-print_blacklist ()
+print_blacklist (void)
 {
   GList *plugins, *cur;
   gint count = 0;