diff --git a/corelib/src/util3d_surface.cpp b/corelib/src/util3d_surface.cpp
index 660a4004..52730420 100644
--- a/corelib/src/util3d_surface.cpp
+++ b/corelib/src/util3d_surface.cpp
@@ -128,7 +128,7 @@ std::list<std::list<int> > clusterPolygons(
 					}
 				}
 			}
-			if(currentCluster.size() > minClusterSize)
+			if((int)currentCluster.size() > minClusterSize)
 			{
 				clusters.push_back(currentCluster);
 			}
diff --git a/guilib/src/ExportCloudsDialog.cpp b/guilib/src/ExportCloudsDialog.cpp
index 155e80ef..82c665e8 100644
--- a/guilib/src/ExportCloudsDialog.cpp
+++ b/guilib/src/ExportCloudsDialog.cpp
@@ -1177,7 +1177,7 @@ bool ExportCloudsDialog::getExportedClouds(
 							for(int i=0; i<nPoints; ++i)
 							{
 								//uv
-								UASSERT(i < oter->second.size());
+								UASSERT(i < (int)oter->second.size());
 								int originalVertex = oter->second[i];
 								textureMesh->tex_coordinates[0][i] = Eigen::Vector2f(
 										float(originalVertex % w) / float(w),      // u