diff --git a/MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/FeatureLib/pfGameGUIMgr/pfGUIEditBoxMod.cpp b/MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/FeatureLib/pfGameGUIMgr/pfGUIEditBoxMod.cpp
index 66b8c3db..10083906 100644
--- a/MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/FeatureLib/pfGameGUIMgr/pfGUIEditBoxMod.cpp
+++ b/MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/FeatureLib/pfGameGUIMgr/pfGUIEditBoxMod.cpp
@@ -517,7 +517,7 @@ hsBool	pfGUIEditBoxMod::HandleKeyEvent( pfGameGUIMgr::EventType event, plKeyDef
 						if (len > 0) 
 						{
 							wchar_t* insertTarget = fBuffer + fCursorPos;
-							size_t bufferTailLen = wcslen(insertTarget);
+							size_t bufferTailLen = wcslen(insertTarget) + 1; //include terminating \0
 							if (fCursorPos + len + bufferTailLen < fBufferSize) 
 							{
 								memmove(insertTarget + len, insertTarget, bufferTailLen * sizeof(wchar_t));