diff --git a/android/phoenix/src/com/retroarch/browser/preferences/util/ConfigFile.java b/android/phoenix/src/com/retroarch/browser/preferences/util/ConfigFile.java
index 7bddf0b4d5..eccaf730cb 100644
--- a/android/phoenix/src/com/retroarch/browser/preferences/util/ConfigFile.java
+++ b/android/phoenix/src/com/retroarch/browser/preferences/util/ConfigFile.java
@@ -34,6 +34,9 @@ public final class ConfigFile
 	 */
 	public ConfigFile(String filePath)
 	{
+		if (filePath == null)
+			throw new IllegalArgumentException("filePath cannot be null.");
+
 		try 
 		{
 			open(filePath);