diff --git a/src/corelib/CMakeLists.txt b/src/corelib/CMakeLists.txt
index c39c2c4c86..4a188dd6b8 100644
--- a/src/corelib/CMakeLists.txt
+++ b/src/corelib/CMakeLists.txt
@@ -558,12 +558,6 @@ qt_internal_extend_target(Core CONDITION INTEGRITY
         --pending_instantiations=128
 )
 
-# Workaround for QTBUG-90353
-# Remove if MinGW (our only supported gcc version < 9) is no longer supported
-qt_internal_extend_target(Core CONDITION GCC AND (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "9.0.0")
-    PUBLIC_COMPILE_OPTIONS -Wno-error=invalid-offsetof
-)
-
 #### Keys ignored in scope 14:.:.:corelib.pro:pathIsAbsolute(_ss_CMAKE_HOST_DATA_DIR):
 # CMAKE_HOST_DATA_DIR = "$$[QT_HOST_DATA/src]/"
 # CMAKE_HOST_DATA_DIR_IS_ABSOLUTE = "True"