diff --git a/src/dexnav.c b/src/dexnav.c
index c3d8e3b992..9247ff77a3 100644
--- a/src/dexnav.c
+++ b/src/dexnav.c
@@ -2499,7 +2499,8 @@ bool8 TryFindHiddenPokemon(void)
             || FlagGet(FLAG_SYS_DEXNAV_SEARCH)
             || GetFlashLevel() > 0)
     {
-        (*stepPtr) = 0;
+        if (stepPtr != NULL)
+            (*stepPtr) = 0;
         return FALSE;
     }