diff --git a/bundles/org.eclipse.swt/Eclipse SWT Browser/win32/org/eclipse/swt/browser/JSON.java b/bundles/org.eclipse.swt/Eclipse SWT Browser/win32/org/eclipse/swt/browser/JSON.java
index 9b3eaa2..2730297 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT Browser/win32/org/eclipse/swt/browser/JSON.java
+++ b/bundles/org.eclipse.swt/Eclipse SWT Browser/win32/org/eclipse/swt/browser/JSON.java
@@ -204,7 +204,7 @@
 		ESCAPED['\n'] = "\\n";
 		ESCAPED['\r'] = "\\r";
 		ESCAPED['\t'] = "\\t";
-		ESCAPED['"'] = "\"";
+		ESCAPED['"'] = "\\\"";
 	}
 
 	StringBuilder sb = new StringBuilder();