diff --git a/code/X3D/X3DImporter.cpp b/code/X3D/X3DImporter.cpp
index 0d48d00b7..d1d38e0b6 100644
--- a/code/X3D/X3DImporter.cpp
+++ b/code/X3D/X3DImporter.cpp
@@ -647,7 +647,7 @@ void X3DImporter::XML_ReadNode_GetAttrVal_AsArrCol4f(const int pAttrIdx, std::ve
 
 	XML_ReadNode_GetAttrVal_AsListCol4f(pAttrIdx, tlist);// read as list
 	// and copy to array
-	if(tlist.size() > 0)
+	if(!tlist.empty())
 	{
 		pValue.reserve(tlist.size());
         for ( std::list<aiColor4D>::iterator it = tlist.begin(); it != tlist.end(); ++it )
diff --git a/code/X3D/X3DImporter_Postprocess.cpp b/code/X3D/X3DImporter_Postprocess.cpp
index 59a085c74..e113b1bad 100644
--- a/code/X3D/X3DImporter_Postprocess.cpp
+++ b/code/X3D/X3DImporter_Postprocess.cpp
@@ -554,7 +554,7 @@ void X3DImporter::Postprocess_BuildMesh(const CX3DImporter_NodeElement& pNodeEle
 		}
 
 		// copy additional information from children
-		for(std::list<CX3DImporter_NodeElement*>::iterator ch_it = tnemesh.Child.begin(); ch_it != tnemesh.Child.end(); ch_it++)
+		for(std::list<CX3DImporter_NodeElement*>::iterator ch_it = tnemesh.Child.begin(); ch_it != tnemesh.Child.end(); ++ch_it)
 		{
 			ai_assert(*pMesh);
 			if((*ch_it)->Type == CX3DImporter_NodeElement::ENET_Color)
diff --git a/code/X3D/X3DImporter_Rendering.cpp b/code/X3D/X3DImporter_Rendering.cpp
index fe54a7891..6e95c9441 100644
--- a/code/X3D/X3DImporter_Rendering.cpp
+++ b/code/X3D/X3DImporter_Rendering.cpp
@@ -295,7 +295,7 @@ void X3DImporter::ParseNode_Rendering_IndexedTriangleFanSet()
 		ne_alias.CoordIndex.clear();
 		int counter = 0;
 		int32_t idx[3];
-		for(std::vector<int32_t>::const_iterator idx_it = index.begin(); idx_it != index.end(); idx_it++)
+		for(std::vector<int32_t>::const_iterator idx_it = index.begin(); idx_it != index.end(); ++idx_it)
 		{
 			idx[2] = *idx_it;
 			if (idx[2] < 0)
@@ -617,7 +617,7 @@ void X3DImporter::ParseNode_Rendering_LineSet()
 		size_t coord_num = 0;
 
 		ne_alias.CoordIndex.clear();
-		for(std::vector<int32_t>::const_iterator vc_it = ne_alias.VertexCount.begin(); vc_it != ne_alias.VertexCount.end(); vc_it++)
+		for(std::vector<int32_t>::const_iterator vc_it = ne_alias.VertexCount.begin(); vc_it != ne_alias.VertexCount.end(); ++vc_it)
 		{
 			if(*vc_it < 2) throw DeadlyImportError("LineSet. vertexCount shall be greater than or equal to two.");