diff --git a/examples/ft80x/ft80x_coprocessor.c b/examples/ft80x/ft80x_coprocessor.c
index 1e56f0a88..0060f6670 100644
--- a/examples/ft80x/ft80x_coprocessor.c
+++ b/examples/ft80x/ft80x_coprocessor.c
@@ -3907,7 +3907,8 @@ int ft80x_coproc_calibrate(int fd, FAR struct ft80x_dlbuffer_s *buffer)
       return ret;
     }
 
-  ft80x_info("Transform A-F: {%08lx, %08lx, %08lx, %08lx, %08lx, %08lx}\n",
+  ft80x_info("Transform A-F: {%08" PRIx32 ", %08" PRIx32 ", %08"
+             PRIx32 ", %08" PRIx32 ", %08" PRIx32 ", %08" PRIx32 "}\n",
              matrix[0], matrix[1], matrix[2],
              matrix[3], matrix[4], matrix[5]);
   return OK;