diff --git a/libc/include/sys/file.h b/libc/include/sys/file.h
index 06937ff..cf2f4b1 100644
--- a/libc/include/sys/file.h
+++ b/libc/include/sys/file.h
@@ -31,7 +31,7 @@
 #include <sys/cdefs.h>
 #include <sys/types.h>
 
-// ANDROID: needed for flock()
+/* ANDROID: needed for flock() */
 #include <unistd.h>
 #include <fcntl.h>
 
diff --git a/libc/include/sys/ioctl_compat.h b/libc/include/sys/ioctl_compat.h
index d79b67a..cab5c80 100644
--- a/libc/include/sys/ioctl_compat.h
+++ b/libc/include/sys/ioctl_compat.h
@@ -39,8 +39,8 @@
 #ifndef _SYS_IOCTL_COMPAT_H_
 #define	_SYS_IOCTL_COMPAT_H_
 
-//#include <sys/ttychars.h>
-//#include <sys/ttydev.h>
+/*#include <sys/ttychars.h>*/
+/*#include <sys/ttydev.h>*/
 
 struct tchars {
 	char	t_intrc;	/* interrupt */
diff --git a/libc/include/sys/ptrace.h b/libc/include/sys/ptrace.h
index 78a057a..848416b 100644
--- a/libc/include/sys/ptrace.h
+++ b/libc/include/sys/ptrace.h
@@ -30,7 +30,7 @@
 
 #include <sys/cdefs.h>
 #include <sys/types.h>
-// For all of the defines
+/* For all of the defines */
 #include <linux/ptrace.h>
 
 __BEGIN_DECLS