diff --git a/android/app/src/main/java/com/robosats/WebAppInterface.kt b/android/app/src/main/java/com/robosats/WebAppInterface.kt
index 38fb026e..53c33a1e 100644
--- a/android/app/src/main/java/com/robosats/WebAppInterface.kt
+++ b/android/app/src/main/java/com/robosats/WebAppInterface.kt
@@ -41,7 +41,7 @@ class WebAppInterface(private val context: MainActivity, private val webView: We
 
     // Security patterns for input validation
     private val UUID_PATTERN = Pattern.compile("^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$", Pattern.CASE_INSENSITIVE)
-    private val SAFE_STRING_PATTERN = Pattern.compile("^[a-zA-Z0-9\\s_\\-.,:;!?()\\[\\]{}\\"]*$")
+    private val SAFE_STRING_PATTERN = Pattern.compile("^[a-zA-Z0-9\\s_\\-.,:;!?()\\[\\]{}\"]*$")
 
     // Maximum length for input strings
     private val MAX_INPUT_LENGTH = 1000