diff --git a/callbacks.c b/callbacks.c
index 662223b..ba7e84b 100644
--- a/callbacks.c
+++ b/callbacks.c
@@ -82,10 +82,12 @@ cb_view_vadjustment_value_changed(GtkAdjustment *adjustment, gpointer data)
 }
 
 void
-cb_pages_per_row_value_changed(girara_session_t* UNUSED(session), girara_setting_t* setting)
+cb_pages_per_row_value_changed(girara_session_t* UNUSED(session), const char* UNUSED(name), girara_setting_type_t UNUSED(type), void* value, void* data)
 {
-  int pages_per_row = setting->value.i;
-  zathura_t* zathura = setting->data;
+  g_return_if_fail(value != NULL);
+
+  int pages_per_row = *(int*) value;
+  zathura_t* zathura = data;
 
   if (pages_per_row < 1) {
     pages_per_row = 1;
diff --git a/callbacks.h b/callbacks.h
index cfa7e20..373443a 100644
--- a/callbacks.h
+++ b/callbacks.h
@@ -39,7 +39,7 @@ void cb_view_vadjustment_value_changed(GtkAdjustment *adjustment, gpointer data)
  * @param session The current girara session
  * @param setting The "pages-per-row" setting
  */
-void cb_pages_per_row_value_changed(girara_session_t* session, girara_setting_t* setting);
+void cb_pages_per_row_value_changed(girara_session_t* UNUSED(session), const char* UNUSED(name), girara_setting_type_t UNUSED(type), void* value, void* data);
 
 /**
  * Called when an index element is activated (e.g.: double click)
diff --git a/database-plain.c b/database-plain.c
index 411646a..65ee461 100644
--- a/database-plain.c
+++ b/database-plain.c
@@ -1,5 +1,7 @@
 /* See LICENSE file for license and copyright information */
 
+#define _POSIX_SOURCE
+
 #include <glib.h>
 #include <stdlib.h>
 #include <string.h>
@@ -295,28 +297,26 @@ zathura_db_read_key_file_from_file(const char* path)
   }
 
   /* open file */
-  int fd = open(path, O_RDWR);
-  if (fd == -1) {
+  FILE* file = fopen(path, "r");
+  if (file == NULL) {
     return NULL;
   }
 
   GKeyFile* key_file = g_key_file_new();
   if (key_file == NULL) {
-    close(fd);
+    fclose(file);
     return NULL;
   }
 
   /* read config file */
-  file_lock_set(fd, F_WRLCK);
-  char* content = girara_file_read_from_fd(fd);
+  file_lock_set(fileno(file), F_WRLCK);
+  char* content = girara_file_read2(file);
+  file_lock_set(fileno(file), F_UNLCK);
+  fclose(file);
   if (content == NULL) {
-    file_lock_set(fd, F_UNLCK);
-    close(fd);
+    g_key_file_free(key_file);
     return NULL;
   }
-  file_lock_set(fd, F_UNLCK);
-
-  close(fd);
 
   /* parse config file */
   size_t contentlen = strlen(content);
@@ -369,7 +369,9 @@ zathura_db_write_key_file_to_file(const char* file, GKeyFile* key_file)
   }
 
   file_lock_set(fd, F_WRLCK);
-  write(fd, content, strlen(content));
+  if (write(fd, content, strlen(content)) == 0) {
+    girara_error("Failed to write to %s", file);
+  }
   file_lock_set(fd, F_UNLCK);
 
   close(fd);
diff --git a/document.c b/document.c
index f96e1dd..de7f0ab 100644
--- a/document.c
+++ b/document.c
@@ -42,6 +42,7 @@ zathura_document_plugins_load(zathura_t* zathura)
     DIR* dir = opendir(plugindir);
     if (dir == NULL) {
       girara_error("could not open plugin directory: %s", plugindir);
+      girara_list_iterator_next(iter);
       continue;
     }
 
diff --git a/shortcuts.c b/shortcuts.c
index 6c5675c..c9bbf0a 100644
--- a/shortcuts.c
+++ b/shortcuts.c
@@ -504,7 +504,7 @@ sc_toggle_fullscreen(girara_session_t* session, girara_argument_t*
     int* tmp = girara_setting_get(session, "pages-per-row");
     if (tmp != NULL) {
       pages_per_row = *tmp;
-      free(tmp);
+      g_free(tmp);
     }
 
     /* set single view */
diff --git a/zathura.h b/zathura.h
index cd8b7be..f0ae1b7 100644
--- a/zathura.h
+++ b/zathura.h
@@ -5,16 +5,10 @@
 
 #include <stdbool.h>
 #include <girara/types.h>
+#include <girara/macros.h>
 #include <gtk/gtk.h>
 
-#ifdef UNUSED
-#elif defined(__GNUC__)
-# define UNUSED(x) UNUSED_ ## x __attribute__((unused))
-#elif defined(__LCINT__)
-# define UNUSED(x) /*@unused@*/ x
-#else
-# define UNUSED(x) x
-#endif
+#define UNUSED(x) GIRARA_UNUSED(x)
 
 enum { NEXT, PREVIOUS, LEFT, RIGHT, UP, DOWN, BOTTOM, TOP, HIDE, HIGHLIGHT,
   DELETE_LAST_WORD, DELETE_LAST_CHAR, DEFAULT, ERROR, WARNING, NEXT_GROUP,