diff --git a/src/tools/bookmark_ignore.c b/src/tools/bookmark_ignore.c
index 06115720..ae8bc5a6 100644
--- a/src/tools/bookmark_ignore.c
+++ b/src/tools/bookmark_ignore.c
@@ -73,7 +73,7 @@ bookmark_ignore_on_connect(const char* const barejid)
 }
 
 void
-bookmark_ignore_on_disconnect()
+bookmark_ignore_on_disconnect(void)
 {
     free_keyfile(&bookmark_ignore_prof_keyfile);
     bookmark_ignore_keyfile = NULL;
diff --git a/src/tools/bookmark_ignore.h b/src/tools/bookmark_ignore.h
index adb3f002..d2f38262 100644
--- a/src/tools/bookmark_ignore.h
+++ b/src/tools/bookmark_ignore.h
@@ -37,7 +37,7 @@
 #define BOOKMARK_IGNORE_H
 
 void bookmark_ignore_on_connect(const char* const barejid);
-void bookmark_ignore_on_disconnect();
+void bookmark_ignore_on_disconnect(void);
 gboolean bookmark_ignored(Bookmark* bookmark);
 gchar** bookmark_ignore_list(gsize* len);
 void bookmark_ignore_add(const char* const barejid);
diff --git a/src/ui/console.c b/src/ui/console.c
index 82cf5ac6..8b4b3efb 100644
--- a/src/ui/console.c
+++ b/src/ui/console.c
@@ -490,7 +490,7 @@ cons_show_wins(gboolean unread)
 }
 
 void
-cons_show_wins_attention()
+cons_show_wins_attention(void)
 {
     ProfWin* console = wins_get_console();
     cons_show("");
diff --git a/src/ui/ui.h b/src/ui/ui.h
index 2ca9495b..4ef297cc 100644
--- a/src/ui/ui.h
+++ b/src/ui/ui.h
@@ -268,7 +268,7 @@ void cons_show_contacts(GSList* list);
 void cons_show_roster(GSList* list);
 void cons_show_roster_group(const char* const group, GSList* list);
 void cons_show_wins(gboolean unread);
-void cons_show_wins_attention();
+void cons_show_wins_attention(void);
 gchar* cons_get_string(ProfConsoleWin* conswin);
 void cons_show_status(const char* const barejid);
 void cons_show_info(PContact pcontact);