1 files changed, 3 insertions, 1 deletions
diff --git a/src/nvim/option.c b/src/nvim/option.c
index 612ecca96a..4c43521f4d 100644
--- a/src/nvim/option.c
+++ b/src/nvim/option.c
@@ -7607,7 +7607,9 @@ int win_signcol_count(win_T *wp)
     }
   }
 
-  return MAX(minimum, MIN(maximum, needed_signcols));
+  int ret = MAX(minimum, MIN(maximum, needed_signcols));
+  assert(ret <= SIGN_SHOW_MAX);
+  return ret;
 }
 
 /// Get window or buffer local options