diff --git a/src/calibre/gui2/convert/regex_builder.py b/src/calibre/gui2/convert/regex_builder.py
index bd699f08a1..cc69b6adfc 100644
--- a/src/calibre/gui2/convert/regex_builder.py
+++ b/src/calibre/gui2/convert/regex_builder.py
@@ -242,5 +242,8 @@ class RegexEdit(QWidget, Ui_Edit):
     def regex(self):
         return self.text
 
+    def clear(self):
+        self.edit.clear()
+
     def check(self):
         return True
diff --git a/src/calibre/gui2/convert/search_and_replace.py b/src/calibre/gui2/convert/search_and_replace.py
index 2229b28997..2ca237b5ec 100644
--- a/src/calibre/gui2/convert/search_and_replace.py
+++ b/src/calibre/gui2/convert/search_and_replace.py
@@ -92,6 +92,8 @@ class SearchAndReplaceWidget(Widget, Ui_Form):
         if  row >= 0:
             self.search_replace.removeRow(row)
             self.search_replace.setCurrentCell(row-1, 0)
+            self.sr_search.clear()
+            self.sr_replace.clear()
 
     def sr_load_clicked(self):
         files = choose_files(self, 'sr_saved_patterns',