diff --git a/source/games/duke/src/sectors_d.cpp b/source/games/duke/src/sectors_d.cpp
index 09dd89545..57581882f 100644
--- a/source/games/duke/src/sectors_d.cpp
+++ b/source/games/duke/src/sectors_d.cpp
@@ -1723,6 +1723,7 @@ void checksectors_d(int snum)
 						return;
 					}
 				}
+				i = -1;
 			}
 
 		CLEARCAMERAS: