diff --git a/Makefile b/Makefile
index be5e94e..39b47f0 100644
--- a/Makefile
+++ b/Makefile
@@ -59,7 +59,7 @@ endif
 
 OBJECTS := libretro.o chaigame.o
 
-all: $(TARGET)
+all: $(TARGET) vendor/libretro-common/include/libretro.h
 
 ifeq ($(DEBUG), 0)
    FLAGS += -O3 -ffast-math -fomit-frame-pointer
@@ -99,4 +99,8 @@ $(TARGET): $(OBJECTS)
 clean:
 	rm -f $(TARGET) $(OBJECTS)
 
+vendor/libretro-common/include/libretro.h:
+	git submodule init
+	git submodule update
+
 .PHONY: clean