diff --git a/src/org/april/agirstatool/core/AgirStatool.java b/src/org/april/agirstatool/core/AgirStatool.java
index a6a1f65..0815d0f 100644
--- a/src/org/april/agirstatool/core/AgirStatool.java
+++ b/src/org/april/agirstatool/core/AgirStatool.java
@@ -204,9 +204,12 @@ public class AgirStatool
 		try
 		{
 			// Copy CSS file.
-			FileUtils.copyURLToFile(AgirStatool.class.getResource("/org/april/agirstatool/core/pages/index.html"), new File(this.targetDirectory, "index.html"));
-			FileUtils.copyURLToFile(AgirStatool.class.getResource("/org/april/agirstatool/core/pages/agirstatool.css"), new File(this.targetDirectory, "agirstatool.css"));
-			FileUtils.copyURLToFile(AgirStatool.class.getResource("/org/april/agirstatool/core/pages/Chart.bundle.min.js"), new File(this.targetDirectory, "Chart.bundle.min.js"));
+			if (!new File(this.targetDirectory, "index.html").exists())
+			{
+				FileUtils.copyURLToFile(AgirStatool.class.getResource("/org/april/agirstatool/core/pages/index.html"), new File(this.targetDirectory, "index.html"));
+				FileUtils.copyURLToFile(AgirStatool.class.getResource("/org/april/agirstatool/core/pages/agirstatool.css"), new File(this.targetDirectory, "agirstatool.css"));
+				FileUtils.copyURLToFile(AgirStatool.class.getResource("/org/april/agirstatool/core/pages/Chart.bundle.min.js"), new File(this.targetDirectory, "Chart.bundle.min.js"));
+			}
 
 			//
 			Project root = listProjectsAsTree();