diff --git a/src/document/katedocument.cpp b/src/document/katedocument.cpp
--- a/src/document/katedocument.cpp
+++ b/src/document/katedocument.cpp
@@ -1308,6 +1308,12 @@
 
     emit textRemoved(this, KTextEditor::Range(line, col, line, col + len), oldText);
 
+    // Unwrap next line if needed
+    l = kateTextLine(line + 1);
+    if (l && l->isAutoWrapped()) {
+        m_buffer->unwrapLine(line + 1);
+    }
+
     editEnd();
 
     return true;