diff --git a/Makefrag b/Makefrag
index f02fb454..eb3fd183 100644
--- a/Makefrag
+++ b/Makefrag
@@ -27,7 +27,7 @@ CHISEL_ARGS := --W0W --minimumCompatibility 3.0.0 --backend $(BACKEND) --configN
 endif
 
 src_path = src/main/scala
-default_submodules = . junctions uncore hardfloat rocket groundtest context-dependent-environments
+default_submodules = . junctions uncore hardfloat rocket groundtest coreplex context-dependent-environments
 chisel_srcs = $(foreach submodule,$(default_submodules) $(ROCKETCHIP_ADDONS),$(wildcard $(base_dir)/$(submodule)/$(src_path)/*.scala))
 chisel_srcs += $(foreach submodule,$(default_submodules) $(ROCKETCHIP_ADDONS),$(wildcard $(base_dir)/$(submodule)/$(src_path)/*/*.scala))