diff --git a/apps/plugins/doom/am_map.c b/apps/plugins/doom/am_map.c
index 9bdd4e4e70..8f04f0df30 100644
--- a/apps/plugins/doom/am_map.c
+++ b/apps/plugins/doom/am_map.c
@@ -889,7 +889,7 @@ boolean AM_clipMline
    register int outcode2 = 0;
    register int outside;
 
-   fpoint_t  tmp;
+   fpoint_t  tmp = {0,0};
    int   dx;
    int   dy;