diff --git a/src/laybasic/laybasic/gsiDeclLayPixelBuffer.cc b/src/laybasic/laybasic/gsiDeclLayPixelBuffer.cc
index c40fd39be..26d02c6b8 100644
--- a/src/laybasic/laybasic/gsiDeclLayPixelBuffer.cc
+++ b/src/laybasic/laybasic/gsiDeclLayPixelBuffer.cc
@@ -25,6 +25,7 @@
 
 #if defined(HAVE_QT)
 #  include <QBuffer>
+#  include <QColor>
 #endif
 
 namespace gsi