diff --git a/qrenderdoc/qrenderdoc.pro b/qrenderdoc/qrenderdoc.pro
index b2aaf2a2a..12b3804b4 100644
--- a/qrenderdoc/qrenderdoc.pro
+++ b/qrenderdoc/qrenderdoc.pro
@@ -4,9 +4,9 @@
 #
 #-------------------------------------------------
 
-QT       += core gui
+QT       += core gui widgets
 
-greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
+lessThan(QT_MAJOR_VERSION, 5): error("requires Qt 5")
 
 TARGET = qrenderdoc
 TEMPLATE = app