diff --git a/src/meshloader.cpp b/src/meshloader.cpp
index 9dad1dc7..8d0bda91 100644
--- a/src/meshloader.cpp
+++ b/src/meshloader.cpp
@@ -133,11 +133,10 @@ MeshLoader::MeshLoader(void *meshlite, int meshId, int triangulatedMeshId, QColo
         triangulatedFace.color.setBlueF(useColorB);
         QVector3D positions[3];
         if (smoothNormal) {
-            inputTrianglesForSmoothAngle.push_back({
-                (size_t)triangleIndices[firstIndex + 0],
+            inputTrianglesForSmoothAngle.push_back(std::make_tuple((size_t)triangleIndices[firstIndex + 0],
                 (size_t)triangleIndices[firstIndex + 1],
                 (size_t)triangleIndices[firstIndex + 2]
-            });
+            ));
             inputNormalsForSmoothAngle.push_back(QVector3D(triangleNormals[firstIndex + 0],
                 triangleNormals[firstIndex + 1],
                 triangleNormals[firstIndex + 2]));
diff --git a/src/meshresultcontext.cpp b/src/meshresultcontext.cpp
index 436a5aec..4cdf2877 100644
--- a/src/meshresultcontext.cpp
+++ b/src/meshresultcontext.cpp
@@ -429,7 +429,7 @@ void MeshResultContext::interpolateTriangleVertexNormals(std::vector<QVector3D>
     for (const auto &vertex: vertices)
         inputVerticies.push_back(vertex.position);
     for (const auto &triangle: triangles) {
-        inputTriangles.push_back({triangle.indicies[0], triangle.indicies[1], triangle.indicies[2]});
+        inputTriangles.push_back(std::make_tuple((size_t)triangle.indicies[0], (size_t)triangle.indicies[1], (size_t)triangle.indicies[2]));
         inputNormals.push_back(triangle.normal);
     }
     angleSmooth(inputVerticies, inputTriangles, inputNormals, thresholdAngleDegrees, resultNormals);