diff --git a/Makefile.inc b/Makefile.inc
index d3aa8856b4..66144cd2ac 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -419,6 +419,7 @@ CFLAGS_common += -fno-delete-null-pointer-checks
 ifeq ($(CCC_ANALYZER_OUTPUT_FORMAT),)
 CFLAGS_common += -Wno-packed-not-aligned
 CFLAGS_common += -fconserve-stack
+CFLAGS_common += -Wnull-dereference -Wreturn-type
 # cf. commit f69a99db (coreboot: x86: enable gc-sections)
 CFLAGS_common += -Wno-unused-but-set-variable
 endif