diff --git a/frmts/mrf/mrf_band.cpp b/frmts/mrf/mrf_band.cpp
index c904aa4..cf981da 100644
--- a/frmts/mrf/mrf_band.cpp
+++ b/frmts/mrf/mrf_band.cpp
@@ -49,7 +49,7 @@
 
 #include <vector>
 #include <assert.h>
-#include "../zlib/zlib.h"
+#include <zlib.h>
 
 CPL_CVSID("$Id: mrf_band.cpp 37663 2017-03-09 20:42:19Z lplesea $");