diff --git a/src/com/activeandroid/ModelInfo.java b/src/com/activeandroid/ModelInfo.java
index 9ace89bff..09e79117c 100644
--- a/src/com/activeandroid/ModelInfo.java
+++ b/src/com/activeandroid/ModelInfo.java
@@ -173,7 +173,7 @@ private void scanForModelClasses(File path, String packageName, ClassLoader clas
 					return;
 				}
 
-				className = className.replace("/", ".");
+				className = className.replace(System.getProperty("file.separator"), ".");
 
 				int packageNameIndex = className.lastIndexOf(packageName);
 				if (packageNameIndex < 0) {