diff --git a/src/pty.c b/src/pty.c
index 1a27ab6..940f63e 100644
--- a/src/pty.c
+++ b/src/pty.c
@@ -268,7 +268,7 @@
 #endif
 
 #if defined(HAVE_SVR4_PTYS) && !defined(PTY_DONE) && !defined(hpux) \
-                    && !(defined(MACOS_X) && !defined(MAC_OS_X_VERSION_10_6))
+	    && !(defined(MACOS_X) && !defined(MAC_OS_X_VERSION_10_6))
 
 /* NOTE: Even though HPUX can have /dev/ptmx, the code below doesn't work!
  * Same for Mac OS X Leopard (10.5). */