diff --git a/src/mcedit2/rendering/blockmodels.pyx b/src/mcedit2/rendering/blockmodels.pyx
index 7b8d0f3..a0c2bae 100644
--- a/src/mcedit2/rendering/blockmodels.pyx
+++ b/src/mcedit2/rendering/blockmodels.pyx
@@ -1,4 +1,4 @@
-#cython: boundscheck=False
+#cython: boundscheck=False, profile=True
 """
     blockmodels
 """
diff --git a/src/mcedit2/rendering/modelmesh.pyx b/src/mcedit2/rendering/modelmesh.pyx
index ec96b9c..5762638 100644
--- a/src/mcedit2/rendering/modelmesh.pyx
+++ b/src/mcedit2/rendering/modelmesh.pyx
@@ -1,4 +1,4 @@
-#cython: boundscheck=False
+#cython: boundscheck=False, profile=True
 """
     ${NAME}
 """