diff --git a/apps/common/main/lib/view/SearchDialog.js b/apps/common/main/lib/view/SearchDialog.js
index 142dfa690..7620173a1 100644
--- a/apps/common/main/lib/view/SearchDialog.js
+++ b/apps/common/main/lib/view/SearchDialog.js
@@ -171,7 +171,7 @@
             this.txtSearch.on('keydown', null, 'search', _.bind(this.onKeyPress, this));
             this.txtReplace.on('keydown', null, 'replace', _.bind(this.onKeyPress, this));
 
-            this.on('animate:before', _.bind(this.focus, this));
+            this.on('animate:before', _.bind(this.onAnimateBefore, this));
 
             return this;
         },
@@ -191,14 +191,18 @@
             this.focus();
         },
 
-        focus: function() {
-            var me  = this;
+        focus: function(type) {
+            var field = (type==='replace') ? this.txtReplace : this.txtSearch;
             setTimeout(function(){
-                me.txtSearch.focus();
-                me.txtSearch.select();
+                field.focus();
+                field.select();
             }, 10);
         },
 
+        onAnimateBefore: function() {
+            this.focus();
+        },
+
         onKeyPress: function(event) {
             if (!this.isLocked()) {
                 if (event.keyCode == Common.UI.Keys.RETURN) {
diff --git a/apps/documenteditor/main/app/controller/LeftMenu.js b/apps/documenteditor/main/app/controller/LeftMenu.js
index fb8a03751..c12d02287 100644
--- a/apps/documenteditor/main/app/controller/LeftMenu.js
+++ b/apps/documenteditor/main/app/controller/LeftMenu.js
@@ -575,8 +575,21 @@ define([
 
         onQueryReplace: function(w, opts) {
             if (!_.isEmpty(opts.textsearch)) {
+                var me = this;
+                var str = this.api.asc_GetErrorForReplaceString(opts.textreplace);
+                if (str) {
+                    Common.UI.warning({
+                        title: this.notcriticalErrorTitle,
+                        msg: Common.Utils.String.format(this.warnReplaceString, str),
+                        buttons: ['ok'],
+                        callback: function(btn){
+                            me.dlgSearch.focus('replace');
+                        }
+                    });
+                    return;
+                }
+
                 if (!this.api.asc_replaceText(opts.textsearch, opts.textreplace, false, opts.matchcase, opts.matchword)) {
-                    var me = this;
                     Common.UI.info({
                         msg: this.textNoTextFound,
                         callback: function() {
@@ -589,6 +602,19 @@ define([
 
         onQueryReplaceAll: function(w, opts) {
             if (!_.isEmpty(opts.textsearch)) {
+                var me = this;
+                var str = this.api.asc_GetErrorForReplaceString(opts.textreplace);
+                if (str) {
+                    Common.UI.warning({
+                        title: this.notcriticalErrorTitle,
+                        msg: Common.Utils.String.format(this.warnReplaceString, str),
+                        buttons: ['ok'],
+                        callback: function(btn){
+                            me.dlgSearch.focus('replace');
+                        }
+                    });
+                    return;
+                }
                 this.api.asc_replaceText(opts.textsearch, opts.textreplace, true, opts.matchcase, opts.matchword);
             }
         },
@@ -928,7 +954,8 @@ define([
         warnDownloadAsRTF       : 'If you continue saving in this format some of the formatting might be lost.<br>Are you sure you want to continue?',
         txtUntitled: 'Untitled',
         txtCompatible: 'The document will be saved to the new format. It will allow to use all the editor features, but might affect the document layout.<br>Use the \'Compatibility\' option of the advanced settings if you want to make the files compatible with older MS Word versions.',
-        warnDownloadAsPdf: 'Your {0} will be converted to an editable format. This may take a while. The resulting document will be optimized to allow you to edit the text, so it might not look exactly like the original {0}, especially if the original file contained lots of graphics.'
+        warnDownloadAsPdf: 'Your {0} will be converted to an editable format. This may take a while. The resulting document will be optimized to allow you to edit the text, so it might not look exactly like the original {0}, especially if the original file contained lots of graphics.',
+        warnReplaceString: '{0} is not a valid special character for the Replace With box.'
 
     }, DE.Controllers.LeftMenu || {}));
 });
\ No newline at end of file
diff --git a/apps/documenteditor/main/locale/en.json b/apps/documenteditor/main/locale/en.json
index 4ab3fda4c..ae09b1213 100644
--- a/apps/documenteditor/main/locale/en.json
+++ b/apps/documenteditor/main/locale/en.json
@@ -514,6 +514,7 @@
   "DE.Controllers.LeftMenu.warnDownloadAs": "If you continue saving in this format all features except the text will be lost.<br>Are you sure you want to continue?",
   "DE.Controllers.LeftMenu.warnDownloadAsPdf": "Your {0} will be converted to an editable format. This may take a while. The resulting document will be optimized to allow you to edit the text, so it might not look exactly like the original {0}, especially if the original file contained lots of graphics.",
   "DE.Controllers.LeftMenu.warnDownloadAsRTF": "If you continue saving in this format some of the formatting might be lost.<br>Are you sure you want to continue?",
+  "DE.Controllers.LeftMenu.warnReplaceString": "{0} is not a valid special character for the Replace With box.",
   "DE.Controllers.Main.applyChangesTextText": "Loading the changes...",
   "DE.Controllers.Main.applyChangesTitleText": "Loading the Changes",
   "DE.Controllers.Main.convertationTimeoutText": "Conversion timeout exceeded.",