diff --git a/repos/libports/lib/import/import-qt6_cmake.mk b/repos/libports/lib/import/import-qt6_cmake.mk
index e9ef66d25b..0b1f35bdae 100644
--- a/repos/libports/lib/import/import-qt6_cmake.mk
+++ b/repos/libports/lib/import/import-qt6_cmake.mk
@@ -23,7 +23,7 @@ GENODE_CMAKE_CFLAGS += \
 	$(CC_OPT_NOSTDINC) \
 	$(CC_MARCH) \
 	$(CC_OPT_PIC) \
-	$(filter-out -I.,$(INCLUDES)) \
+	$(filter-out -I. $(foreach i,$(INCLUDES),$(if $(findstring /base-$(KERNEL)/include,$(i)),$(i))),$(INCLUDES)) \
 	-I$(CURDIR)/build_dependencies/mkspecs/$(QT_PLATFORM)
 
 GENODE_CMAKE_LFLAGS_APP += \
diff --git a/repos/libports/lib/import/import-qt6_qmake.mk b/repos/libports/lib/import/import-qt6_qmake.mk
index 5b4e340444..0c100e9312 100644
--- a/repos/libports/lib/import/import-qt6_qmake.mk
+++ b/repos/libports/lib/import/import-qt6_qmake.mk
@@ -25,7 +25,7 @@ GENODE_QMAKE_CFLAGS += \
 	$(CC_OPT_NOSTDINC) \
 	$(CC_MARCH) \
 	$(CC_OPT_PIC) \
-	$(filter-out -I.,$(INCLUDES)) \
+	$(filter-out -I. $(foreach i,$(INCLUDES),$(if $(findstring /base-$(KERNEL)/include,$(i)),$(i))),$(INCLUDES)) \
 	-I$(CURDIR)/build_dependencies/include/QtCore/spec/$(QT_PLATFORM)
 
 GENODE_QMAKE_LFLAGS_APP += \