diff --git a/.github/calcrom/Makefile b/.github/calcrom/Makefile
index a6d394acc..0cb14cb6f 100644
--- a/.github/calcrom/Makefile
+++ b/.github/calcrom/Makefile
@@ -10,6 +10,10 @@ ifeq ($(OS),Windows_NT)
 EXE := .exe
 else
 EXE :=
+UNAME_S = $(shell uname -s)
+ifeq ($(UNAME_S),Darwin)
+CXXFLAGS += "-I$(shell brew --prefix)/include"
+endif
 endif
 
 CXXSRCS := calcrom.cpp BuildAnalyzer.cpp ElfFile.cpp Glob.cpp MwerksXmapFile.cpp