diff --git a/imgui_demo.cpp b/imgui_demo.cpp
index e9b5da51..dda0a53d 100644
--- a/imgui_demo.cpp
+++ b/imgui_demo.cpp
@@ -2316,7 +2316,7 @@ struct ExampleAppConsole
                         for (int i = 0; i < candidates.Size && all_candidates_matches; i++)
                             if (i == 0)
                                 c = toupper(candidates[i][match_len]);
-                            else if (c != toupper(candidates[i][match_len]))
+                            else if (c == 0 || c != toupper(candidates[i][match_len]))
                                 all_candidates_matches = false;
                         if (!all_candidates_matches)
                             break;