diff --git a/test/core/src/temalab/logger/Log.java b/test/core/src/temalab/logger/Log.java
index a972fd2..74afb12 100644
--- a/test/core/src/temalab/logger/Log.java
+++ b/test/core/src/temalab/logger/Log.java
@@ -11,43 +11,43 @@ public void setLogger(Logger newLogger) {
 		logger = newLogger;
 	}
 
-	public static void d(String label, String message) {
+	public synchronized static void d(String label, String message) {
 		logger.debug(
 				new Label(label, Label.Color.None, Label.Color.None),
 				message);
 	}
 
-	public static void i(String label, String message) {
+	public synchronized static void i(String label, String message) {
 		logger.info(
 				new Label(label, Label.Color.None, Label.Color.None),
 				message);
 	}
 
-	public static void w(String label, String message) {
+	public synchronized static void w(String label, String message) {
 		logger.warning(
 				new Label(label, Label.Color.None, Label.Color.None),
 				message);
 	}
 
-	public static void e(String label, String message) {
+	public synchronized static void e(String label, String message) {
 		logger.error(
 				new Label(label, Label.Color.None, Label.Color.None),
 				message);
 	}
 
-	public static void d(Label label, String message) {
+	public synchronized static void d(Label label, String message) {
 		logger.debug(label, message);
 	}
 
-	public static void i(Label label, String message) {
+	public synchronized static void i(Label label, String message) {
 		logger.info(label, message);
 	}
 
-	public static void w(Label label, String message) {
+	public synchronized static void w(Label label, String message) {
 		logger.warning(label, message);
 	}
 
-	public static void e(Label label, String message) {
+	public synchronized static void e(Label label, String message) {
 		logger.error(label, message);
 	}
 }