diff --git a/src/citra_qt/CMakeLists.txt b/src/citra_qt/CMakeLists.txt
index fb2e8742f..edd2a3eb2 100644
--- a/src/citra_qt/CMakeLists.txt
+++ b/src/citra_qt/CMakeLists.txt
@@ -234,6 +234,9 @@ target_compile_definitions(citra-qt PRIVATE
 
     # Disable unsafe overloads of QProcess' start() function.
     -DQT_NO_PROCESS_COMBINED_ARGUMENT_START
+
+    # Disable implicit QString->QUrl conversions to enforce use of proper resolving functions.
+    -DQT_NO_URL_CAST_FROM_STRING
 )
 
 if (CITRA_ENABLE_COMPATIBILITY_REPORTING)