diff --git a/src/libCom/Makefile b/src/libCom/Makefile
index cc2924fe0..42a136d60 100644
--- a/src/libCom/Makefile
+++ b/src/libCom/Makefile
@@ -14,6 +14,7 @@ LIBCOM = $(TOP)/src/libCom
 
 # Command-line input support
 epicsReadline_CFLAGS += -DEPICS_COMMANDLINE_LIBRARY=EPICS_COMMANDLINE_LIBRARY_$(COMMANDLINE_LIBRARY)
+epicsReadline_INCLUDES += $(INCLUDES_$(COMMANDLINE_LIBRARY))
 
 #epicsVersion is created by this Makefile
 INC += epicsVersion.h