diff --git a/escher/src/palette.cpp b/escher/src/palette.cpp
index 9f5371178..1f92dac02 100644
--- a/escher/src/palette.cpp
+++ b/escher/src/palette.cpp
@@ -27,6 +27,7 @@ constexpr KDColor Palette::CalculationBackgroundOdd;
 constexpr KDColor Palette::CalculationBackgroundEven;
 constexpr KDColor Palette::CalculationEmptyBox;
 constexpr KDColor Palette::CalculationEmptyBoxNeeded;
+constexpr KDColor Palette::CalculationTrigoAndComplexForeground;
 
 constexpr KDColor Palette::CodeBackground;
 constexpr KDColor Palette::CodeBackgroundSelected;