diff --git a/src/json/parseany.cpp b/src/json/parseany.cpp
index 4823e7b..b7119bd 100644
--- a/src/json/parseany.cpp
+++ b/src/json/parseany.cpp
@@ -254,10 +254,10 @@ namespace epics{namespace pvData{
 epics::pvData::PVStructure::shared_pointer
 parseJSON(std::istream& strm)
 {
-    yajl_parser_config conf = {
-        .allowComments = 1,
-        .checkUTF8 = 1,
-    };
+    yajl_parser_config conf;
+    memset(&conf, 0, sizeof(conf));
+    conf.allowComments = 1;
+    conf.checkUTF8 = 1;
 
     context ctxt;
 
diff --git a/src/json/parseinto.cpp b/src/json/parseinto.cpp
index ca4a9b0..66c5ad4 100644
--- a/src/json/parseinto.cpp
+++ b/src/json/parseinto.cpp
@@ -236,10 +236,10 @@ epicsShareFunc
 void parseJSON(std::istream& strm,
                const PVField::shared_pointer& dest)
 {
-    yajl_parser_config conf = {
-        .allowComments = 1,
-        .checkUTF8 = 1,
-    };
+    yajl_parser_config conf;
+    memset(&conf, 0, sizeof(conf));
+    conf.allowComments = 1;
+    conf.checkUTF8 = 1;
 
     context ctxt(dest);