diff --git a/include/mapnik/image_filter.hpp b/include/mapnik/image_filter.hpp
index 9b0b754cc..150741330 100644
--- a/include/mapnik/image_filter.hpp
+++ b/include/mapnik/image_filter.hpp
@@ -678,7 +678,7 @@ void apply_filter(Src & src, scale_hsla const& transform)
 }
 
 template <typename Src, typename ColorBlindFilter>
-void color_blind_filter(Src & src, ColorBlindFilter const& op)
+void apply_color_blind_filter(Src & src, ColorBlindFilter const& op)
 {
     using namespace boost::gil;
     rgba8_view_t src_view = rgba8_view(src);
@@ -801,19 +801,19 @@ void color_blind_filter(Src & src, ColorBlindFilter const& op)
 template <typename Src>
 void apply_filter(Src & src, color_blind_protanope const& op)
 {
-    color_blind_filter(src, op);
+    apply_color_blind_filter(src, op);
 }
 
 template <typename Src>
 void apply_filter(Src & src, color_blind_deuteranope const& op)
 {
-    color_blind_filter(src, op);
+    apply_color_blind_filter(src, op);
 }
 
 template <typename Src>
 void apply_filter(Src & src, color_blind_tritanope const& op)
 {
-    color_blind_filter(src, op);
+    apply_color_blind_filter(src, op);
 }
 
 template <typename Src>