diff --git a/utils/file_info.pl b/utils/file_info.pl
index e8eb09456..44063ab70 100755
--- a/utils/file_info.pl
+++ b/utils/file_info.pl
@@ -35,7 +35,7 @@ my %opt = ();
     my $mesh = $model->mesh;
     $mesh->check_manifoldness;
     printf "  number of facets: %d\n", scalar @{$mesh->facets};
-    printf "  size: x=%s y=%s z=%s\n", $mesh->size;
+    printf "  size: x=%s y=%s z=%s\n", @{$mesh->size};
 }