diff --git a/vcg/simplex/face/base.h b/vcg/simplex/face/base.h
index 240ed5c0..3fd48cb2 100644
--- a/vcg/simplex/face/base.h
+++ b/vcg/simplex/face/base.h
@@ -104,7 +104,7 @@ class FaceTypeHolder{
   typedef BTT *TetraPointer;
 	template <class LeftF>
 	void ImportLocal(const LeftF & ){}
-	static void Name(std::vector<std::string> & name){}
+    static void Name(std::vector<std::string> & /* name */){}
 
 
  // prot
diff --git a/vcg/simplex/vertex/base.h b/vcg/simplex/vertex/base.h
index 7cd2fea7..bd696229 100644
--- a/vcg/simplex/vertex/base.h
+++ b/vcg/simplex/vertex/base.h
@@ -95,7 +95,7 @@ class VertexTypeHolder{
   typedef BTT *TetraPointer;
 	template < class LeftV>
 	void ImportLocal(const LeftV  & /* left */ ) { } 
-	static void Name(std::vector<std::string> & name){}
+    static void Name(std::vector<std::string> & /* name */){}
 
 };
 
diff --git a/wrap/io_trimesh/export_vmi.h b/wrap/io_trimesh/export_vmi.h
index 849a404e..4ca070ce 100644
--- a/wrap/io_trimesh/export_vmi.h
+++ b/wrap/io_trimesh/export_vmi.h
@@ -70,7 +70,7 @@ namespace io {
 		/* save Ocf Vertex Components */
 		template <typename OpenMeshType,typename CONT>
 		struct SaveVertexOcf{
-			SaveVertexOcf(FILE*f, const CONT & vert, bool only_header){
+            SaveVertexOcf(FILE*f, const CONT & /*vert*/, bool only_header){
 				// do nothing, it is a std::vector
 				if(only_header){
 					WriteString(f,"NOT_HAS_VERTEX_QUALITY_OCF");
@@ -144,7 +144,7 @@ namespace io {
 		/* save Ocf Face Components */
 		template <typename MeshType,typename CONT>
 		struct SaveFaceOcf{
-			SaveFaceOcf(FILE * f,const CONT & face, bool only_header){
+            SaveFaceOcf(FILE * f,const CONT & /*face*/, bool only_header){
 				// it is a std::vector
 				if(only_header){
 					WriteString(f,"NOT_HAS_FACE_QUALITY_OCF");
diff --git a/wrap/io_trimesh/import_vmi.h b/wrap/io_trimesh/import_vmi.h
index ff0baae8..f033dd30 100644
--- a/wrap/io_trimesh/import_vmi.h
+++ b/wrap/io_trimesh/import_vmi.h
@@ -300,7 +300,7 @@ namespace io {
 
         template <typename MeshType, typename CONT>
                 struct LoadVertexOcf{
-                        LoadVertexOcf(FILE*f,const CONT & vert){
+                        LoadVertexOcf(FILE* /*f*/,const CONT & /*vert*/){
                                 // do nothing, it is a std::vector
                         }
                 };
@@ -382,7 +382,7 @@ namespace io {
 
                 template <typename MeshType, typename CONT>
                 struct LoadFaceOcf{
-                        LoadFaceOcf(FILE * f, const CONT & face){
+                        LoadFaceOcf(FILE * /* f */ , const CONT & /* face */){
                                 // do nothing, it is a std::vector
                         }
                 };
@@ -398,7 +398,7 @@ namespace io {
 
                     // face color
                     ReadString(f,s);
-                    if( s == std::string("HAS_FACE_COLOR_OCF"))		mask	|=   Mask::IOM_FACECOLOR;			
+                         if( s == std::string("HAS_FACE_COLOR_OCF"))		mask	|=   Mask::IOM_FACECOLOR;
 
                     // face normal
                     ReadString(f,s);
@@ -616,7 +616,7 @@ namespace io {
 			return true;
 		}
 	
-                static int Open(OpenMeshType &m, const char * filename, int & mask,CallBackPos  * cb = 0 ){
+            static int Open(OpenMeshType &m, const char * filename, int & mask,CallBackPos  * /*cb*/ = 0 ){
 			
 			typedef typename OpenMeshType::VertexType VertexType; 	
 			typedef typename OpenMeshType::FaceType FaceType; 	
@@ -661,7 +661,7 @@ namespace io {
 			m.vert.resize(vertSize);
 
 
-			int read = 0;
+            size_t read = 0;
 			/* load the vertices */
 			if(vertSize>0){
 				read=fread((void*)& m.vert[0],sizeof(VertexType),vertSize,F());
@@ -688,7 +688,7 @@ namespace io {
 	
 			ReadString(F(),_trash); ReadInt(F(),n);
 
-			for(int ia = 0 ; ia < n; ++ia){
+            for(size_t ia = 0 ; ia < n; ++ia){
 				ReadString(F(),_trash); ReadString(F(),_string);
 				ReadString(F(),_trash); ReadInt(F(),sz);
 
@@ -700,7 +700,7 @@ namespace io {
 
 			/* load the per face attributes */
 			ReadString(F(),_trash); ReadInt(F(),n);
-			for(int ia = 0 ; ia < n; ++ia){
+            for(size_t ia = 0 ; ia < n; ++ia){
 				ReadString(F(),_trash); ReadString(F(),_string);
 				ReadString(F(),_trash); ReadInt(F(),sz);
 				void * data = Malloc(sz*m.face.size());