diff --git a/spacy/syntax/_parse_features.pyx b/spacy/syntax/_parse_features.pyx
index 3220fb7f5..01aa31ba0 100644
--- a/spacy/syntax/_parse_features.pyx
+++ b/spacy/syntax/_parse_features.pyx
@@ -1,4 +1,3 @@
-# cython: profile=True
 """
 Fill an array, context, with every _atomic_ value our features reference.
 We then write the _actual features_ as tuples of the atoms. The machinery
diff --git a/spacy/syntax/arc_eager.pyx b/spacy/syntax/arc_eager.pyx
index 0808fabf8..b297140ba 100644
--- a/spacy/syntax/arc_eager.pyx
+++ b/spacy/syntax/arc_eager.pyx
@@ -1,4 +1,3 @@
-# cython: profile=True
 from __future__ import unicode_literals
 
 import ctypes
diff --git a/spacy/syntax/parser.pyx b/spacy/syntax/parser.pyx
index 521567048..69d70ad03 100644
--- a/spacy/syntax/parser.pyx
+++ b/spacy/syntax/parser.pyx
@@ -1,4 +1,3 @@
-# cython: profile=True
 """
 MALT-style dependency parser
 """
diff --git a/spacy/syntax/stateclass.pyx b/spacy/syntax/stateclass.pyx
index 2ce87c79a..2a7bcfd7a 100644
--- a/spacy/syntax/stateclass.pyx
+++ b/spacy/syntax/stateclass.pyx
@@ -1,4 +1,3 @@
-# cython: profile=True
 from libc.string cimport memcpy, memset
 from libc.stdint cimport uint32_t
 from ..vocab cimport EMPTY_LEXEME