diff --git a/lib/ace/placeholder.js b/lib/ace/placeholder.js
index 4b5ba4e7..f0fa5b46 100644
--- a/lib/ace/placeholder.js
+++ b/lib/ace/placeholder.js
@@ -117,6 +117,8 @@ var PlaceHolder = function(session, length, pos, others, mainClass, othersClass)
         var range = delta.range;
         if(range.start.row !== range.end.row) return;
         if(range.start.row !== this.pos.row) return;
+        if (this.$updating) return;
+        this.$updating = true;
         var lengthDiff = delta.action === "insertText" ? range.end.column - range.start.column : range.start.column - range.end.column;
         
         if(range.start.column >= this.pos.column && range.start.column <= this.pos.column + this.length + 1) {
@@ -169,9 +171,11 @@ var PlaceHolder = function(session, length, pos, others, mainClass, othersClass)
                 this.others[i]._emit("change", {value: this.others[i]});
             }
         }
+        this.$updating = false;
     };
     
     this.onCursorChange = function(event) {
+        if (this.$updating) return;
         var pos = this.session.selection.getCursor();
         if(pos.row === this.pos.row && pos.column >= this.pos.column && pos.column <= this.pos.column + this.length) {
             this.showOtherMarkers();