diff --git a/solvespace.h b/solvespace.h
index d7ee852..e777780 100644
--- a/solvespace.h
+++ b/solvespace.h
@@ -4,7 +4,7 @@
 
 // Debugging functions
 #define oops() do { dbp("oops at line %d, file %s", __LINE__, __FILE__); \
-                    if(1) *(char *)0 = 1; exit(-1); } while(0)
+                    if(0) *(char *)0 = 1; exit(-1); } while(0)
 #ifndef min
 #define min(x, y) ((x) < (y) ? (x) : (y))
 #endif
diff --git a/wishlist.txt b/wishlist.txt
index b7df74a..f9db34a 100644
--- a/wishlist.txt
+++ b/wishlist.txt
@@ -4,6 +4,7 @@ crude DXF, HPGL import
 a request to import a plane thing
 make export assemble only contours in same group
 rotation of model view works about z of first point under cursor
+a way to kill a slow operation
 
 -----
 rounding, as a special group