diff --git a/src/pdf/SkPDFDocument.cpp b/src/pdf/SkPDFDocument.cpp
index 31fba11..af57919 100644
--- a/src/pdf/SkPDFDocument.cpp
+++ b/src/pdf/SkPDFDocument.cpp
@@ -438,7 +438,7 @@
     for (const char* proc : kProcs) {
         procSet->appendName(proc);
     }
-    dict->insertObject("ProcSets", std::move(procSet));
+    dict->insertObject("ProcSet", std::move(procSet));
     return dict;
 }