diff --git a/code/3DSExporter.cpp b/code/3DSExporter.cpp
index f33799fef..16e1e8a01 100644
--- a/code/3DSExporter.cpp
+++ b/code/3DSExporter.cpp
@@ -164,7 +164,7 @@ void ExportScene3DS(const char* pFile, IOSystem* pIOSystem, const aiScene* pScen
     // in |Exporter::ExportFormatEntry|.
     aiScene* scenecopy_tmp;
     SceneCombiner::CopyScene(&scenecopy_tmp,pScene);
-    std::auto_ptr<aiScene> scenecopy(scenecopy_tmp);
+    std::unique_ptr<aiScene> scenecopy(scenecopy_tmp);
 
     SplitLargeMeshesProcess_Triangle tri_splitter;
     tri_splitter.SetLimit(0xffff);
diff --git a/code/Exporter.cpp b/code/Exporter.cpp
index 873fa1612..72aae1acc 100644
--- a/code/Exporter.cpp
+++ b/code/Exporter.cpp
@@ -324,7 +324,7 @@ aiReturn Exporter :: Export( const aiScene* pScene, const char* pFormatId, const
                 aiScene* scenecopy_tmp;
                 SceneCombiner::CopyScene(&scenecopy_tmp,pScene);
 
-                std::auto_ptr<aiScene> scenecopy(scenecopy_tmp);
+                std::unique_ptr<aiScene> scenecopy(scenecopy_tmp);
                 const ScenePrivateData* const priv = ScenePriv(pScene);
 
                 // steps that are not idempotent, i.e. we might need to run them again, usually to get back to the
diff --git a/code/IFCLoader.cpp b/code/IFCLoader.cpp
index 4366fa04e..de4384082 100644
--- a/code/IFCLoader.cpp
+++ b/code/IFCLoader.cpp
@@ -423,7 +423,7 @@ void ResolveObjectPlacement(aiMatrix4x4& m, const IfcObjectPlacement& place, Con
 bool ProcessMappedItem(const IfcMappedItem& mapped, aiNode* nd_src, std::vector< aiNode* >& subnodes_src, unsigned int matid, ConversionData& conv)
 {
     // insert a custom node here, the cartesian transform operator is simply a conventional transformation matrix
-    std::auto_ptr<aiNode> nd(new aiNode());
+    std::unique_ptr<aiNode> nd(new aiNode());
     nd->mName.Set("IfcMappedItem");
 
     // handle the Cartesian operator
@@ -684,7 +684,7 @@ aiNode* ProcessSpatialStructure(aiNode* parent, const IfcProduct& el, Conversion
     }
 
     // add an output node for this spatial structure
-    std::auto_ptr<aiNode> nd(new aiNode());
+    std::unique_ptr<aiNode> nd(new aiNode());
     nd->mName.Set(el.GetClassName()+"_"+(el.Name?el.Name.Get():"Unnamed")+"_"+el.GlobalId);
     nd->mParent = parent;
 
@@ -771,7 +771,7 @@ aiNode* ProcessSpatialStructure(aiNode* parent, const IfcProduct& el, Conversion
                     const IfcFeatureElementSubtraction& open = fills->RelatedOpeningElement;
 
                     // move opening elements to a separate node since they are semantically different than elements that are just 'contained'
-                    std::auto_ptr<aiNode> nd_aggr(new aiNode());
+                    std::unique_ptr<aiNode> nd_aggr(new aiNode());
                     nd_aggr->mName.Set("$RelVoidsElement");
                     nd_aggr->mParent = nd.get();
 
@@ -816,7 +816,7 @@ aiNode* ProcessSpatialStructure(aiNode* parent, const IfcProduct& el, Conversion
                 }
 
                 // move aggregate elements to a separate node since they are semantically different than elements that are just 'contained'
-                std::auto_ptr<aiNode> nd_aggr(new aiNode());
+                std::unique_ptr<aiNode> nd_aggr(new aiNode());
                 nd_aggr->mName.Set("$RelAggregates");
                 nd_aggr->mParent = nd.get();
 
diff --git a/code/IFCMaterial.cpp b/code/IFCMaterial.cpp
index be0015bab..25686b83f 100644
--- a/code/IFCMaterial.cpp
+++ b/code/IFCMaterial.cpp
@@ -154,7 +154,7 @@ unsigned int ProcessMaterials(uint64_t id, unsigned int prevMatId, ConversionDat
                             IFCImporter::LogWarn("ignoring surface side marker on IFC::IfcSurfaceStyle: " + side);
                         }
 
-                        std::auto_ptr<aiMaterial> mat(new aiMaterial());
+                        std::unique_ptr<aiMaterial> mat(new aiMaterial());
 
                         FillMaterial(mat.get(), surf, conv);
 
@@ -190,7 +190,7 @@ unsigned int ProcessMaterials(uint64_t id, unsigned int prevMatId, ConversionDat
     }
 
     // we're here, yet - no default material with suitable color available. Generate one
-    std::auto_ptr<aiMaterial> mat(new aiMaterial());
+    std::unique_ptr<aiMaterial> mat(new aiMaterial());
     mat->AddProperty(&name,AI_MATKEY_NAME);
 
     const aiColor4D col = aiColor4D( 0.6f, 0.6f, 0.6f, 1.0f); // aiColor4D( color.r, color.g, color.b, 1.0f);
diff --git a/code/IFCUtil.cpp b/code/IFCUtil.cpp
index 7a47fb02d..89a6c78c5 100644
--- a/code/IFCUtil.cpp
+++ b/code/IFCUtil.cpp
@@ -75,7 +75,7 @@ aiMesh* TempMesh::ToMesh()
         return NULL;
     }
 
-    std::auto_ptr<aiMesh> mesh(new aiMesh());
+    std::unique_ptr<aiMesh> mesh(new aiMesh());
 
     // copy vertices
     mesh->mNumVertices = static_cast<unsigned int>(verts.size());
diff --git a/code/STEPFile.h b/code/STEPFile.h
index 050e76b24..63a1c2239 100644
--- a/code/STEPFile.h
+++ b/code/STEPFile.h
@@ -509,7 +509,7 @@ namespace STEP {
 
         static Object* Construct(const STEP::DB& db, const EXPRESS::LIST& params) {
             // make sure we don't leak if Fill() throws an exception
-            std::auto_ptr<TDerived> impl(new TDerived());
+            std::unique_ptr<TDerived> impl(new TDerived());
 
             // GenericFill<T> is undefined so we need to have a specialization
             const size_t num_args = GenericFill<TDerived>(db,params,&*impl);
diff --git a/code/STEPFileReader.cpp b/code/STEPFileReader.cpp
index 424653193..70217b1c6 100644
--- a/code/STEPFileReader.cpp
+++ b/code/STEPFileReader.cpp
@@ -88,7 +88,7 @@ STEP::TypeError::TypeError (const std::string& s,uint64_t entity /* = ENTITY_NOT
 STEP::DB* STEP::ReadFileHeader(boost::shared_ptr<IOStream> stream)
 {
     boost::shared_ptr<StreamReaderLE> reader = boost::shared_ptr<StreamReaderLE>(new StreamReaderLE(stream));
-    std::auto_ptr<STEP::DB> db = std::auto_ptr<STEP::DB>(new STEP::DB(reader));
+    std::unique_ptr<STEP::DB> db = std::unique_ptr<STEP::DB>(new STEP::DB(reader));
 
     LineSplitter& splitter = db->GetSplitter();
     if (!splitter || *splitter != "ISO-10303-21;") {