diff --git a/imagery/i.atcorr/main.cpp b/imagery/i.atcorr/main.cpp
index 475c1358ca2..98a69f330fa 100644
--- a/imagery/i.atcorr/main.cpp
+++ b/imagery/i.atcorr/main.cpp
@@ -204,12 +204,12 @@ class TICache {
 private:
     struct RBitem set_alt_vis(double alt, double vis)
     {
-        struct RBitem rbitem = {0, 0, {0, 0.0, {{0.0, 0.0, 0.0}, {0.0, 0.0, 0.0}}, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0}};
+        struct RBitem rbitem = {
 
         /* alt and vis must be in meters */
-        rbitem.alt = (alt < 0 ? (int)(alt - 0.5) : (int)(alt + 0.5));
-        rbitem.vis = (int)(vis + 0.5);
-
+        .alt = (alt < 0 ? (int)(alt - 0.5) : (int)(alt + 0.5)),
+        .vis = (int)(vis + 0.5)
+        };
         return rbitem;
     }