diff --git a/src/config/XmlSupport.cxx b/src/config/XmlSupport.cxx
index c507fb6..fac9065 100644
--- a/src/config/XmlSupport.cxx
+++ b/src/config/XmlSupport.cxx
@@ -274,7 +274,7 @@ bool XmlSupport::load_default_files()
     cfg_file += default_configuration_file_name();
 
     std::string normalized_path = utils::normalize_path(cfg_file).c_str();
-    if (RTIOsapiUtility_fileExists(normalized_path.c_str())) {
+    if (utils::file_exists(normalized_path)) {
         parse_file(normalized_path);
     } else {
         // If files aren't in the default location, try to load the default
@@ -285,7 +285,7 @@ bool XmlSupport::load_default_files()
         cfg_file += default_configuration_file_name();
 
         normalized_path = utils::normalize_path(cfg_file).c_str();
-        if (RTIOsapiUtility_fileExists(normalized_path.c_str())) {
+        if (utils::file_exists(normalized_path)) {
             parse_file(normalized_path);
         } else {
             GATEWAYLog_warn(
@@ -295,7 +295,7 @@ bool XmlSupport::load_default_files()
     }
 
     // Load the user file name (from working directory only)
-    if (RTIOsapiUtility_fileExists(user_configuration_file_name().c_str())) {
+    if (utils::file_exists(user_configuration_file_name())) {
         parse_file(user_configuration_file_name());
     } else {
         GATEWAYLog_warn(
diff --git a/src/service/Utils.hpp b/src/service/Utils.hpp
index 652afe0..52e22cf 100644
--- a/src/service/Utils.hpp
+++ b/src/service/Utils.hpp
@@ -70,6 +70,15 @@ static std::string executable_path()
     return std::string(path);
 }
 
+static bool file_exists(const std::string& filename)
+{
+#if RTI_DDS_VERSION_MAJOR >= 7 && RTI_DDS_VERSION_MINOR >= 1
+    return static_cast<bool>(RTIOsapiFile_exists(filename.c_str()));
+#else
+    return static_cast<bool>(RTIOsapiUtility_fileExists(filename.c_str()));
+#endif
+}
+
 class Thread {
 public:
     Thread(const std::string& name = std::string("Thread"),