diff --git a/callbacks.h b/callbacks.h
index fc332f7..8f7c902 100644
--- a/callbacks.h
+++ b/callbacks.h
@@ -7,6 +7,7 @@
 #include <girara/types.h>
 #include <girara/macros.h>
 
+#include "internal.h"
 #include "document.h"
 #include "zathura.h"
 
diff --git a/document.h b/document.h
index adcf80c..316e666 100644
--- a/document.h
+++ b/document.h
@@ -26,12 +26,6 @@ typedef enum zathura_document_meta_e
   ZATHURA_DOCUMENT_MODIFICATION_DATE /**< Modification data */
 } zathura_document_meta_t;
 
-typedef struct zathura_password_dialog_info_s
-{
-  char* path; /**< Path to the file */
-  zathura_t* zathura;  /**< Zathura session */
-} zathura_password_dialog_info_t;
-
 /**
  * Document
  */
diff --git a/internal.h b/internal.h
new file mode 100644
index 0000000..fadacfb
--- /dev/null
+++ b/internal.h
@@ -0,0 +1,17 @@
+/* See LICENSE file for license and copyright information */
+
+#ifndef INTERNAL_H
+#define INTERNAL_H
+
+#include "zathura.h"
+
+/**
+ * Zathura password dialog
+ */
+typedef struct zathura_password_dialog_info_s
+{
+  char* path; /**< Path to the file */
+  zathura_t* zathura;  /**< Zathura session */
+} zathura_password_dialog_info_t;
+
+#endif // INTERNAL_H