diff --git a/fastiv.c b/fastiv.c
index 7524021..d0bed31 100644
--- a/fastiv.c
+++ b/fastiv.c
@@ -405,12 +405,12 @@ on_key_press_view(G_GNUC_UNUSED GtkWidget *widget, GdkEventKey *event,
 		case GDK_KEY_space:
 			on_next();
 			return TRUE;
-		}
 
 		case GDK_KEY_Tab:
 		case GDK_KEY_Return:
 			gtk_stack_set_visible_child(GTK_STACK(g.stack), g.browser_paned);
 			return TRUE;
+		}
 	}
 	return FALSE;
 }
diff --git a/meson.build b/meson.build
index 1f8764e..7599285 100644
--- a/meson.build
+++ b/meson.build
@@ -1,4 +1,10 @@
-project('fastiv', 'c', default_options : ['c_std=gnu99'], version : '0.1.0')
+project('fastiv', 'c',
+	default_options : ['c_std=gnu99', 'warning_level=2'],
+	version : '0.1.0')
+add_project_arguments(
+	meson.get_compiler('c').get_supported_arguments('-Wno-cast-function-type'),
+	language: 'c',
+)
 
 # TODO(p): Use libraw_r later, when we start parallelizing/preloading.
 libraw = dependency('libraw', required : get_option('libraw'))