1 files changed, 2 insertions, 2 deletions
diff --git a/setup.py b/setup.py
index ebf884b..b32ab17 100644
--- a/setup.py
+++ b/setup.py
@@ -5,9 +5,9 @@ import setuptools
 VERSION = '0.1'
 
 CFLAGS = ['-O2']
-
 if platform.uname().system != 'Windows':
-    CFLAGS.extend(['-fsigned-char', '-Wall', '-Wsign-compare', '-Wconversion'])
+    CFLAGS.extend(['-std=c99', '-fsigned-char', '-Wall',
+                   '-Wsign-compare', '-Wconversion'])
 
 
 setuptools.setup(