diff --git a/src/fe-gtk/chanlist.c b/src/fe-gtk/chanlist.c
index 43685fab..e652c669 100644
--- a/src/fe-gtk/chanlist.c
+++ b/src/fe-gtk/chanlist.c
@@ -452,7 +452,7 @@ void
 fe_add_chan_list (server *serv, char *chan, char *users, char *topic)
 {
 	chanlistrow *next_row;
-	int len = strlen (chan) + 1;
+	size_t len = strlen (chan) + 1;
 
 	/* we allocate the struct and channel string in one go */
 	next_row = g_malloc (sizeof (chanlistrow) + len);
diff --git a/src/fe-gtk/gtkutil.c b/src/fe-gtk/gtkutil.c
index 7853466d..e4cf1790 100644
--- a/src/fe-gtk/gtkutil.c
+++ b/src/fe-gtk/gtkutil.c
@@ -976,7 +976,7 @@ gtkutil_copy_to_clipboard (GtkWidget *widget, GdkAtom selection,
 	win = gtk_widget_get_toplevel (GTK_WIDGET (widget));
 	if (gtk_widget_is_toplevel (win))
 	{
-		int len = strlen (str);
+		gint len = (gint) strlen (str);
 
 		if (selection)
 		{
diff --git a/src/fe-gtk/menu.c b/src/fe-gtk/menu.c
index 90fa4847..6f7e2f09 100644
--- a/src/fe-gtk/menu.c
+++ b/src/fe-gtk/menu.c
@@ -2309,7 +2309,7 @@ menu_reorder (GtkMenu *menu, GtkWidget *item, int pos)
 	if (pos < 0)	/* position offset from end/bottom */
 	{
 		GList *children = gtk_container_get_children (GTK_CONTAINER (menu));
-		int length = g_list_length (children);
+		gint length = (gint) g_list_length (children);
 
 		g_list_free (children);
 		gtk_menu_reorder_child (menu, item, (length + pos) - 1);
@@ -2381,7 +2381,7 @@ menu_add_sub (GtkWidget *menu, menu_entry *me)
 		if (pos < 0)	/* position offset from end/bottom */
 		{
 			GList *children = gtk_container_get_children (GTK_CONTAINER (menu));
-			int length = g_list_length (children);
+			gint length = (gint) g_list_length (children);
 
 			g_list_free (children);
 			pos = length + pos;
diff --git a/src/fe-gtk/setup.c b/src/fe-gtk/setup.c
index 7ae99106..47c23e76 100644
--- a/src/fe-gtk/setup.c
+++ b/src/fe-gtk/setup.c
@@ -2180,7 +2180,7 @@ unslash (char *dir)
 {
         if (dir[0])
         {
-                int len = strlen (dir) - 1;
+                size_t len = strlen (dir) - 1;
 #ifdef WIN32
                 if (dir[len] == '/' || dir[len] == '\\')
 #else