diff --git a/src/meshlabplugins/u3d_io/u3d_gui.cpp b/src/meshlabplugins/u3d_io/u3d_gui.cpp
index a25821824..93ae7ba3e 100644
--- a/src/meshlabplugins/u3d_io/u3d_gui.cpp
+++ b/src/meshlabplugins/u3d_io/u3d_gui.cpp
@@ -3,8 +3,8 @@
 
 float avoidExponentialNotation(const float n,const float bboxdiag)
 {
-	float val_min = std::min(1000.0f,floor(bboxdiag * 1000.0f));
-	return floor(val_min * n ) / val_min;
+	float val_min = std::min(1000.0f,floorf(bboxdiag * 1000.0f));
+	return floorf(val_min * n ) / val_min;
 }
 
 vcg::Point3f avoidExponentialNotation(const vcg::Point3f& p,const float bboxdiag)