diff --git a/zathura/database-plain.c b/zathura/database-plain.c
index 22e4636..388a7b3 100644
--- a/zathura/database-plain.c
+++ b/zathura/database-plain.c
@@ -246,10 +246,7 @@ error_free:
   g_free(priv->bookmark_path);
   priv->bookmark_path = NULL;
 
-  if (priv->bookmark_monitor != NULL) {
-    g_object_unref(priv->bookmark_monitor);
-    priv->bookmark_monitor = NULL;
-  }
+  g_clear_object(&priv->bookmark_monitor);
 
   if (priv->bookmarks != NULL) {
     g_key_file_free(priv->bookmarks);
@@ -260,10 +257,7 @@ error_free:
   g_free(priv->history_path);
   priv->history_path = NULL;
 
-  if (priv->history_monitor != NULL) {
-    g_object_unref(priv->history_monitor);
-    priv->history_monitor = NULL;
-  }
+  g_clear_object(&priv->history_monitor);
 
   if (priv->history != NULL) {
     g_key_file_free(priv->history);
diff --git a/zathura/document.c b/zathura/document.c
index d094e2e..70f06e5 100644
--- a/zathura/document.c
+++ b/zathura/document.c
@@ -119,8 +119,7 @@ zathura_document_open(zathura_t* zathura, const char* path, const char* uri,
   document->uri         = g_strdup(uri);
   if (document->uri == NULL) {
     document->basename    = g_file_get_basename(file);
-  }
-  else {
+  } else {
     GFile *gf = g_file_new_for_uri(document->uri);
     document->basename = g_file_get_basename(gf);
     g_object_unref(gf);
diff --git a/zathura/print.c b/zathura/print.c
index a31df9e..df6087b 100644
--- a/zathura/print.c
+++ b/zathura/print.c
@@ -215,12 +215,8 @@ cb_print_done(GtkPrintOperation* operation, GtkPrintOperationResult result,
               zathura_t* zathura)
 {
   if (result == GTK_PRINT_OPERATION_RESULT_APPLY) {
-    if (zathura->print.settings != NULL) {
-      g_object_unref(zathura->print.settings);
-    }
-    if (zathura->print.page_setup != NULL) {
-      g_object_unref(zathura->print.page_setup);
-    }
+    g_clear_object(&zathura->print.settings);
+    g_clear_object(&zathura->print.page_setup);
 
     /* save previous settings */
     zathura->print.settings   = g_object_ref(gtk_print_operation_get_print_settings(operation));
diff --git a/zathura/zathura.c b/zathura/zathura.c
index 2979324..5d96de2 100644
--- a/zathura/zathura.c
+++ b/zathura/zathura.c
@@ -391,10 +391,7 @@ zathura_free(zathura_t* zathura)
 #endif
 
   /* stop D-Bus */
-  if (zathura->dbus != NULL) {
-    g_object_unref(zathura->dbus);
-    zathura->dbus = NULL;
-  }
+  g_clear_object(&zathura->dbus);
 
   if (zathura->ui.session != NULL) {
     girara_session_destroy(zathura->ui.session);
@@ -415,18 +412,11 @@ zathura_free(zathura_t* zathura)
   girara_list_free(zathura->bookmarks.bookmarks);
 
   /* database */
-  if (zathura->database != NULL) {
-    g_object_unref(G_OBJECT(zathura->database));
-  }
+  g_clear_object(&zathura->database);
 
   /* free print settings */
-  if (zathura->print.settings != NULL) {
-    g_object_unref(zathura->print.settings);
-  }
-
-  if (zathura->print.page_setup != NULL) {
-    g_object_unref(zathura->print.page_setup);
-  }
+  g_clear_object(&zathura->print.settings);
+  g_clear_object(&zathura->print.page_setup);
 
   /* free registered plugins */
   zathura_plugin_manager_free(zathura->plugins.manager);
@@ -1216,10 +1206,7 @@ document_close(zathura_t* zathura, bool keep_monitor)
 
   /* remove monitor */
   if (keep_monitor == false) {
-    if (zathura->file_monitor.monitor != NULL) {
-      g_object_unref(zathura->file_monitor.monitor);
-      zathura->file_monitor.monitor = NULL;
-    }
+    g_clear_object(&zathura->file_monitor.monitor);
 
     if (zathura->file_monitor.password != NULL) {
       g_free(zathura->file_monitor.password);
@@ -1245,8 +1232,7 @@ document_close(zathura_t* zathura, bool keep_monitor)
   zathura->jumplist.size = 0;
 
   /* release render thread */
-  g_object_unref(zathura->sync.render_thread);
-  zathura->sync.render_thread = NULL;
+  g_clear_object(&zathura->sync.render_thread);
 
   /* remove widgets */
   gtk_container_foreach(GTK_CONTAINER(zathura->ui.page_widget), remove_page_from_table, NULL);