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-rw-r--r--src/mode.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mode.cpp b/src/mode.cpp
index 729024861..e7ee1c3dc 100644
--- a/src/mode.cpp
+++ b/src/mode.cpp
@@ -603,7 +603,7 @@ void ModeParser::CleanMask(std::string &mask)
* swap the two items over so that at least the n!u@h ordering
* is correct even if the elements may not be
*/
- if (pos_of_pling > pos_of_at)
+ if (((pos_of_pling != std::string::npos) && (pos_of_at != std::string::npos)) && (pos_of_pling > pos_of_at))
{
mask.replace(pos_of_pling, 1, "@");
mask.replace(pos_of_at, 1, "!");