diff --git a/cmake/QtInternalTargets.cmake b/cmake/QtInternalTargets.cmake
index 21730457d84..2208c28f346 100644
--- a/cmake/QtInternalTargets.cmake
+++ b/cmake/QtInternalTargets.cmake
@@ -48,6 +48,11 @@ function(qt_internal_set_warnings_are_errors_flags target target_scope)
         if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "11.0.0")
             # We do mixed enum arithmetic all over the place:
             list(APPEND flags -Wno-error=deprecated-enum-enum-conversion -Wno-error=deprecated-enum-float-conversion)
+
+            # GCC has some false positive, and it specifically comes through in MINGW
+            if (MINGW)
+                list(APPEND flags -Wno-error=stringop-overread)
+            endif()
         endif()
 
         if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "11.0.0" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS "11.2.0")