diff --git a/progs/glsl/convolutions.c b/progs/glsl/convolutions.c
index c2fb76e1aa5..350e61bbdc5 100644
--- a/progs/glsl/convolutions.c
+++ b/progs/glsl/convolutions.c
@@ -369,7 +369,7 @@ static void keyPress(unsigned char key, int x, int y)
    case 27:
       exit(0);
    default:
-      return;
+      break;
    }
    glutPostRedisplay();
 }