diff --git a/src/ifcgeom/mapping/IfcObjectPlacement.cpp b/src/ifcgeom/mapping/IfcObjectPlacement.cpp
index 499d9d787b..66744d5571 100644
--- a/src/ifcgeom/mapping/IfcObjectPlacement.cpp
+++ b/src/ifcgeom/mapping/IfcObjectPlacement.cpp
@@ -126,7 +126,7 @@ taxonomy::ptr mapping::map_impl(const IfcSchema::IfcObjectPlacement* inst) {
 
 	if (fallback) {
         auto mapped_fallback = taxonomy::cast<taxonomy::matrix4>(map(fallback));
-        if (mapped_fallback != result) {
+        if (!result->ccomponents().isApprox(mapped_fallback->ccomponents())) {
             Logger::Warning("Computed placement differs from fallback", inst);
         }
     }