diff --git a/rdf/base/src/rdfutil.cpp b/rdf/base/src/rdfutil.cpp
index 07183c75287..b9151038ba9 100644
--- a/rdf/base/src/rdfutil.cpp
+++ b/rdf/base/src/rdfutil.cpp
@@ -180,7 +180,7 @@ rdf_FormatDate(PRTime aTime, nsACString &aResult)
     PRExplodedTime t;
     PR_ExplodeTime(aTime, PR_LocalTimeParameters, &t);
 
-    char buf[32];
+    char buf[256];
     PR_FormatTimeUSEnglish(buf, sizeof buf, "%a %b %d %H:%M:%S %Z %Y", &t);
     aResult.Append(buf);