diff --git a/mozilla/layout/generic/nsFrame.cpp b/mozilla/layout/generic/nsFrame.cpp
index 48662b76a8c..9920f835a42 100644
--- a/mozilla/layout/generic/nsFrame.cpp
+++ b/mozilla/layout/generic/nsFrame.cpp
@@ -1680,7 +1680,7 @@ nsFrame::XMLQuote(nsString& aString)
       len += 3;
       i += 3;
     }
-    else if (ch == '"') {
+    else if (ch == '\"') {
       nsAutoString tmp(""");
       aString.Cut(i, 1);
       aString.Insert(tmp, i);
diff --git a/mozilla/layout/html/base/src/nsFrame.cpp b/mozilla/layout/html/base/src/nsFrame.cpp
index 48662b76a8c..9920f835a42 100644
--- a/mozilla/layout/html/base/src/nsFrame.cpp
+++ b/mozilla/layout/html/base/src/nsFrame.cpp
@@ -1680,7 +1680,7 @@ nsFrame::XMLQuote(nsString& aString)
       len += 3;
       i += 3;
     }
-    else if (ch == '"') {
+    else if (ch == '\"') {
       nsAutoString tmp(""");
       aString.Cut(i, 1);
       aString.Insert(tmp, i);