diff --git a/build_keyboard.mk b/build_keyboard.mk
index 0debc4925..a6b578efb 100644
--- a/build_keyboard.mk
+++ b/build_keyboard.mk
@@ -56,9 +56,17 @@ ifeq ($(PLATFORM),CHIBIOS)
 	OPT_OS = chibios
 endif
 
+CONFIG_H = $(KEYBOARD_PATH)/config.h
+ifneq ($(SUBPROJECT),)
+	ifneq ("$(wildcard $(SUBPROJECT_C))","")
+		CONFIG_H = $(SUBPROJECT_PATH)/config.h
+	endif
+endif
+
 # Save the defines and includes here, so we don't include any keymap specific ones 
 PROJECT_DEFS := $(OPT_DEFS)
 PROJECT_INC := $(VPATH) $(EXTRAINCDIRS) $(SUBPROJECT_PATH) $(KEYBOARD_PATH)
+PROJECT_CONFIG := $(CONFIG_H)
 
 MAIN_KEYMAP_PATH := $(KEYBOARD_PATH)/keymaps/$(KEYMAP)
 MAIN_KEYMAP_C := $(MAIN_KEYMAP_PATH)/keymap.c
@@ -94,13 +102,6 @@ KEYMAP_OUTPUT := $(BUILD_DIR)/obj_$(TARGET)
 
 ifneq ("$(wildcard $(KEYMAP_PATH)/config.h)","")
 	CONFIG_H = $(KEYMAP_PATH)/config.h
-else
-	CONFIG_H = $(KEYBOARD_PATH)/config.h
-	ifneq ($(SUBPROJECT),)
-		ifneq ("$(wildcard $(SUBPROJECT_C))","")
-			CONFIG_H = $(SUBPROJECT_PATH)/config.h
-		endif
-	endif
 endif
 
 # # project specific files
@@ -192,9 +193,11 @@ OUTPUTS := $(KEYMAP_OUTPUT) $(KEYBOARD_OUTPUT)
 $(KEYMAP_OUTPUT)_SRC := $(SRC)
 $(KEYMAP_OUTPUT)_DEFS := $(OPT_DEFS) -DQMK_KEYBOARD=\"$(KEYBOARD)\" -DQMK_KEYMAP=\"$(KEYMAP)\" 
 $(KEYMAP_OUTPUT)_INC := $(EXTRAINCDIRS) $(VPATH)
+$(KEYMAP_OUTPUT)_CONFIG := $(CONFIG_H)
 $(KEYBOARD_OUTPUT)_SRC := $(CHIBISRC)
 $(KEYBOARD_OUTPUT)_DEFS := $(PROJECT_DEFS)
 $(KEYBOARD_OUTPUT)_INC := $(PROJECT_INC)
+$(KEYBOARD_OUTPUT)_CONFIG  := $(PROJECT_CONFIG)
 
 
 include $(TMK_PATH)/rules.mk
diff --git a/tmk_core/rules.mk b/tmk_core/rules.mk
index 7b2c842ed..977a2d0e5 100644
--- a/tmk_core/rules.mk
+++ b/tmk_core/rules.mk
@@ -98,9 +98,6 @@ CFLAGS += -Wstrict-prototypes
 #CFLAGS += -Wsign-compare
 CFLAGS += -Wa,-adhlns=$(@:%.o=%.lst)
 CFLAGS += $(CSTANDARD)
-ifdef CONFIG_H
-    CFLAGS += -include $(CONFIG_H)
-endif
 
 
 #---------------- Compiler Options C++ ----------------
@@ -124,10 +121,6 @@ CPPFLAGS += -Wundef
 #CPPFLAGS += -Wsign-compare
 CPPFLAGS += -Wa,-adhlns=$(@:%.o=%.lst)
 #CPPFLAGS += $(CSTANDARD)
-ifdef CONFIG_H
-    CPPFLAGS += -include $(CONFIG_H)
-endif
-
 
 #---------------- Assembler Options ----------------
 #  -Wa,...:   tell GCC to pass this to the assembler.
@@ -140,9 +133,6 @@ endif
 #       dump that will be displayed for a given single line of source input.
 ASFLAGS += $(ADEFS) 
 ASFLAGS += -Wa,-adhlns=$(@:%.o=%.lst),-gstabs,--listing-cont-lines=100
-ifdef CONFIG_H
-    ASFLAGS += -include $(CONFIG_H)
-endif
 
 #---------------- Library Options ----------------
 # Minimalistic printf version
@@ -296,10 +286,12 @@ BEGIN = gccversion sizebefore
 
 define GEN_OBJRULE
 $1_INCFLAGS := $$(patsubst %,-I%,$$($1_INC))
-$1_CFLAGS = $$(ALL_CFLAGS) $$($1_DEFS) $$($1_INCFLAGS)
-$1_CPPFLAGS= $$(ALL_CPPFLAGS) $$($1_DEFS) $$($1_INCFLAGS)
-$1_ASFLAGS= $$(ALL_ASFLAGS) $$($1_DEFS) $$($1_INCFLAGS)
-$$(info $$($1_INCFLAGS))
+ifdef $1_CONFIG
+$1_CONFIG_FLAGS += -include $$($1_CONFIG)
+endif
+$1_CFLAGS = $$(ALL_CFLAGS) $$($1_DEFS) $$($1_INCFLAGS) $$($1_CONFIG_FLAGS)
+$1_CPPFLAGS= $$(ALL_CPPFLAGS) $$($1_DEFS) $$($1_INCFLAGS) $$($1_CONFIG_FLAGS)
+$1_ASFLAGS= $$(ALL_ASFLAGS) $$($1_DEFS) $$($1_INCFLAGS) $$($1_CONFIG_FLAGS)
 
 # Compile: create object files from C source files.
 $1/%.o : %.c $1/%.d $1/cflags.txt $1/compiler.txt | $(BEGIN)