diff --git a/io.c b/io.c
index b35854c1a8..69dbc93cff 100644
--- a/io.c
+++ b/io.c
@@ -46,7 +46,7 @@
 #endif
 
 #ifdef __QNXNTO__
-#include "unix.h"
+#include <unix.h>
 #endif
 
 #include <sys/types.h>
diff --git a/vm_dump.c b/vm_dump.c
index 2099310f60..47e6776d8a 100644
--- a/vm_dump.c
+++ b/vm_dump.c
@@ -14,7 +14,7 @@
 #include "vm_core.h"
 #include "iseq.h"
 #ifdef HAVE_UCONTEXT_H
-#include "ucontext.h"
+#include <ucontext.h>
 #endif
 
 /* see vm_insnhelper.h for the values */