diff --git a/cockatrice/src/logger.cpp b/cockatrice/src/logger.cpp
index e954fee4..d1380530 100644
--- a/cockatrice/src/logger.cpp
+++ b/cockatrice/src/logger.cpp
@@ -106,7 +106,7 @@ QString Logger::getSystemArchitecture()
 
 QString Logger::getClientOperatingSystem()
 {
-    #ifdef QSYSINFO_H
+    #if QT_VERSION >= 0x050400
         return QSysInfo::prettyProductName();
     #endif