a.diff

diff --git a/src/textbuf.cpp b/src/textbuf.cpp
index 388e480211..59e8d69e23 100644
--- a/src/textbuf.cpp
+++ b/src/textbuf.cpp
@@ -271,8 +271,10 @@ void Textbuf::DiscardMarkedText(bool update)
 {
 	if (this->markend == 0) return;
 
-	this->DeleteText(this->markpos, this->markend, update);
+	uint16_t old_markpos = this->markpos;
+	uint16_t old_markend = this->markend;
 	this->markpos = this->markend = this->markxoffs = this->marklength = 0;
+	this->DeleteText(old_markpos, old_markend, update);
 }
 
 /**