diff --git a/src/controls/QskSlider.cpp b/src/controls/QskSlider.cpp
index 60f5b855..7d5b2554 100644
--- a/src/controls/QskSlider.cpp
+++ b/src/controls/QskSlider.cpp
@@ -20,7 +20,7 @@ QSK_SUBCONTROL( QskSlider, Handle )
 
 QSK_SYSTEM_STATE( QskSlider, Pressed, QskAspect::FirstSystemState << 2 )
 
-static inline constexpr QskAspect qskAspectGraduationPolicy()
+static inline QskAspect qskAspectGraduationPolicy()
 {
     return QskSlider::Tick | QskAspect::Option;
 }
diff --git a/src/controls/QskSpinBox.cpp b/src/controls/QskSpinBox.cpp
index f6a238c3..2e628b4c 100644
--- a/src/controls/QskSpinBox.cpp
+++ b/src/controls/QskSpinBox.cpp
@@ -36,7 +36,7 @@ namespace
         return QskAspect::NoSubcontrol;
     }
 
-    inline constexpr QskAspect aspectDecoration()
+    inline QskAspect aspectDecoration()
     {
         return QskSpinBox::Panel | QskAspect::Style;
     }