diff --git a/code/BlenderBMesh.cpp b/code/BlenderBMesh.cpp
index bf27a9396..c328947ae 100644
--- a/code/BlenderBMesh.cpp
+++ b/code/BlenderBMesh.cpp
@@ -180,7 +180,7 @@ void BlenderBMeshConverter::AddFace( int v1, int v2, int v3, int v4 )
     // TODO - Work out how materials work
     face.mat_nr = 0;
     triMesh->mface.push_back( face );
-    triMesh->totface = triMesh->mface.size( );
+    triMesh->totface = static_cast<int>(triMesh->mface.size( ));
 }
 
 // ------------------------------------------------------------------------------------------------
diff --git a/code/BlenderLoader.cpp b/code/BlenderLoader.cpp
index 68388235f..713146eea 100644
--- a/code/BlenderLoader.cpp
+++ b/code/BlenderLoader.cpp
@@ -421,7 +421,7 @@ void BlenderImporter::ResolveImage(aiMaterial* out, const Material* mat, const M
     // check if the file contents are bundled with the BLEND file
     if (img->packedfile) {
         name.data[0] = '*';
-        name.length = 1+ ASSIMP_itoa10(name.data+1,MAXLEN-1,conv_data.textures->size());
+        name.length = 1+ ASSIMP_itoa10(name.data+1,static_cast<unsigned int>(MAXLEN-1), static_cast<unsigned int>(conv_data.textures->size()));
 
         conv_data.textures->push_back(new aiTexture());
         aiTexture* tex = conv_data.textures->back();
@@ -1228,7 +1228,7 @@ aiNode* BlenderImporter::ConvertNode(const Scene& in, const Object* obj, Convers
             if (conv_data.meshes->size() > old) {
                 node->mMeshes = new unsigned int[node->mNumMeshes = static_cast<unsigned int>(conv_data.meshes->size()-old)];
                 for (unsigned int i = 0; i < node->mNumMeshes; ++i) {
-                    node->mMeshes[i] = i + old;
+                    node->mMeshes[i] = static_cast<unsigned int>(i + old);
                 }
             }}
             break;
diff --git a/code/BlenderTessellator.cpp b/code/BlenderTessellator.cpp
index c29b27de1..60879b417 100644
--- a/code/BlenderTessellator.cpp
+++ b/code/BlenderTessellator.cpp
@@ -412,9 +412,9 @@ float BlenderTessellatorP2T::FindLargestMatrixElem( const aiMatrix3x3& mtx ) con
 {
     float result = 0.0f;
 
-    for ( size_t x = 0; x < 3; ++x )
+    for ( unsigned int x = 0; x < 3; ++x )
     {
-        for ( size_t y = 0; y < 3; ++y )
+        for ( unsigned int y = 0; y < 3; ++y )
         {
             result = p2tMax( std::fabs( mtx[ x ][ y ] ), result );
         }
@@ -429,9 +429,9 @@ aiMatrix3x3 BlenderTessellatorP2T::ScaleMatrix( const aiMatrix3x3& mtx, float sc
 {
     aiMatrix3x3 result;
 
-    for ( size_t x = 0; x < 3; ++x )
+    for ( unsigned int x = 0; x < 3; ++x )
     {
-        for ( size_t y = 0; y < 3; ++y )
+        for ( unsigned int y = 0; y < 3; ++y )
         {
             result[ x ][ y ] = mtx[ x ][ y ] * scale;
         }
diff --git a/test/unit/utBlenderIntermediate.cpp b/test/unit/utBlenderIntermediate.cpp
index 0bf40936b..98c87f9c8 100644
--- a/test/unit/utBlenderIntermediate.cpp
+++ b/test/unit/utBlenderIntermediate.cpp
@@ -40,6 +40,10 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 #include "UnitTestPCH.h"
 #include "BlenderIntermediate.h"
+#include "./../include/assimp/camera.h"
+#include "./../include/assimp/light.h"
+#include "./../include/assimp/mesh.h"
+#include "./../include/assimp/texture.h"
 
 using namespace ::Assimp;
 using namespace ::Assimp::Blender;