diff --git a/src/main/java/spoon/support/compiler/jdt/JDTBasedSpoonCompiler.java b/src/main/java/spoon/support/compiler/jdt/JDTBasedSpoonCompiler.java
index 3291cdb917b..7d47268b745 100644
--- a/src/main/java/spoon/support/compiler/jdt/JDTBasedSpoonCompiler.java
+++ b/src/main/java/spoon/support/compiler/jdt/JDTBasedSpoonCompiler.java
@@ -589,7 +589,11 @@ protected void generateProcessedSourceFilesUsingCUs() {
 
 	// this function is used to hack the JDT compiler...
 	protected File createTmpJavaFile(File folder) {
-		File f = new File(folder, "Tmp.java");
+		try {
+			f = File.createTempFile("Tmp", ".java", folder);
+		} catch (IOException e1) {
+			throw new SpoonException(e1);
+		}
 		if (f.exists()) {
 			return f;
 		}