diff --git a/rtengine/iccstore.h b/rtengine/iccstore.h
index 48efae087..bdb15d2c0 100644
--- a/rtengine/iccstore.h
+++ b/rtengine/iccstore.h
@@ -34,7 +34,7 @@ namespace rtengine
 namespace procparams
 {
 
-    class ColorManagementParams;
+    struct ColorManagementParams;
 
 }