diff --git a/src/gtk/colour.cpp b/src/gtk/colour.cpp
index 9d4e90e393..1d004de25f 100644
--- a/src/gtk/colour.cpp
+++ b/src/gtk/colour.cpp
@@ -133,7 +133,7 @@ bool wxColour::operator == ( const wxColour& col ) const
 
 bool wxColour::operator != ( const wxColour& col) const
 {
-    return m_refData != col.m_refData;
+    return !(*this == col);
 }
 
 void wxColour::Set( unsigned char red, unsigned char green, unsigned char blue )
diff --git a/src/gtk1/colour.cpp b/src/gtk1/colour.cpp
index 9d4e90e393..1d004de25f 100644
--- a/src/gtk1/colour.cpp
+++ b/src/gtk1/colour.cpp
@@ -133,7 +133,7 @@ bool wxColour::operator == ( const wxColour& col ) const
 
 bool wxColour::operator != ( const wxColour& col) const
 {
-    return m_refData != col.m_refData;
+    return !(*this == col);
 }
 
 void wxColour::Set( unsigned char red, unsigned char green, unsigned char blue )