diff --git a/src/pdfviewer.c b/src/pdfviewer.c
index 7efd1c8..5ad154e 100644
--- a/src/pdfviewer.c
+++ b/src/pdfviewer.c
@@ -719,6 +719,7 @@ void pdf_render_area(GtkWidget *area, GdkEventExpose *event, void * data)
 	PDF * pdf = data;
 	GdkWindow * window;
         cairo_t *cr;
+	(void) event;
 
 #ifdef DEBUG
 	fprintf(stderr, "DEBUG: %s()\n", __func__);