diff --git a/public/res/extensions/scrollLink.js b/public/res/extensions/scrollLink.js
index 6666186a..39921196 100644
--- a/public/res/extensions/scrollLink.js
+++ b/public/res/extensions/scrollLink.js
@@ -54,16 +54,19 @@ define([
         var htmlSectionOffset;
         var previewScrollTop = $previewElt.scrollTop();
         $previewElt.find(".preview-content > .se-section-delimiter").each(function() {
+            if(htmlSectionOffset === undefined) {
+                // Force start to 0 for the first section
+                htmlSectionOffset = 0;
+                return;
+            }
             var $delimiterElt = $(this);
             // Consider div scroll position
             var newSectionOffset = $delimiterElt.position().top + previewScrollTop;
-            if(htmlSectionOffset !== undefined) {
-                htmlSectionList.push({
-                    startOffset: htmlSectionOffset,
-                    endOffset: newSectionOffset,
-                    height: newSectionOffset - htmlSectionOffset
-                });
-            }
+            htmlSectionList.push({
+                startOffset: htmlSectionOffset,
+                endOffset: newSectionOffset,
+                height: newSectionOffset - htmlSectionOffset
+            });
             htmlSectionOffset = newSectionOffset;
         });
         // Last section
diff --git a/public/res/html/bodyIndex.html b/public/res/html/bodyIndex.html
index bc3bf32a..cbb4e232 100644
--- a/public/res/html/bodyIndex.html
+++ b/public/res/html/bodyIndex.html
@@ -298,7 +298,7 @@
 						<label class="col-lg-4 control-label"
 							for="input-import-image-size">Size limit (optional)</label>
 						<div class="col-lg-7 form-inline">
-							<input type="text" id="input-import-image-size" placeholder="123"
+							<input type="text" id="input-import-image-size" placeholder="0"
 								class="col-lg-3 form-control"> px
 						</div>
 					</div>