diff --git a/widget/gtk/nsDeviceContextSpecG.cpp b/widget/gtk/nsDeviceContextSpecG.cpp
index f0de247407f0..93401134a11e 100644
--- a/widget/gtk/nsDeviceContextSpecG.cpp
+++ b/widget/gtk/nsDeviceContextSpecG.cpp
@@ -295,8 +295,14 @@ nsDeviceContextSpecGTK::BeginDocument(const nsAString& aTitle,
                                       const nsAString& aPrintToFileName,
                                       int32_t aStartPage, int32_t aEndPage)
 {
-  mTitle.Truncate();
-  AppendUTF16toUTF8(aTitle, mTitle);
+  // Print job names exceeding 255 bytes are safe with GTK version 3.18.2 or
+  // newer. This is a workaround for old GTK.
+  if (gtk_check_version(3,18,2) != nullptr) {
+    PrintTarget::AdjustPrintJobNameForIPP(aTitle, mTitle);
+  } else {
+    CopyUTF16toUTF8(aTitle, mTitle);
+  }
+
   return NS_OK;
 }