diff --git a/Makefile.mk b/Makefile.mk
index 1b658b5..7be4685 100644
--- a/Makefile.mk
+++ b/Makefile.mk
@@ -528,6 +528,7 @@
 CFLAGS_common += -Wstring-compare
 ifeq ($(CONFIG_COMPILER_GCC),y)
 CFLAGS_common += -Wold-style-declaration
+CFLAGS_common += -Walloc-size
 # Don't add these GCC specific flags when running scan-build
 ifeq ($(CCC_ANALYZER_OUTPUT_FORMAT),)
 CFLAGS_common += -Wno-packed-not-aligned