diff --git a/make/defs-orig.mk b/make/defs-orig.mk
index a63fd1ca..d4aa5502 100644
--- a/make/defs-orig.mk
+++ b/make/defs-orig.mk
@@ -58,7 +58,7 @@ REQUIRED_DIR  = $(patsubst %,$(MODDIR)/%,$(REQUIRED))
 REQUIRED_DONE = $(patsubst %,%/all.done,$(REQUIRED_DIR))
 REQUIRED_H    = $(foreach dir,$(REQUIRED_DIR),$(wildcard $(dir)/*.h))  
 REQUIRED_C    = $(foreach dir,$(REQUIRED_DIR),$(wildcard $(dir)/*.c)) 
-REQUIRED_CPP  = $(foreach dir,$(REQUIRED_DIR),$(wildcard $(dir)/*.c)) \
+REQUIRED_CPP  = $(foreach dir,$(REQUIRED_DIR),$(wildcard $(dir)/*.cpp)) \
               $(foreach dir,$(PREREQ_DIR),$(wildcard $(dir)/*.cpp)) 
 REQUIRED_CSRC = $(REQUIRED_H) $(REQUIRED_C) $(REQUIRED_CPP)