diff --git a/src/gui/kernel/qplatformglcontext_qpa.cpp b/src/gui/kernel/qplatformglcontext_qpa.cpp
index 5c56efbf2f..b0c6aeb27a 100644
--- a/src/gui/kernel/qplatformglcontext_qpa.cpp
+++ b/src/gui/kernel/qplatformglcontext_qpa.cpp
@@ -62,7 +62,8 @@ class QPlatformGLContextPrivate
 {
 public:
     QPlatformGLContextPrivate()
-        :qGLContextHandle(0)
+        : qGLContextHandle(0)
+        , qGLContextDeleteFunction(0)
     {
     }