diff --git a/src/libCom/test/Makefile b/src/libCom/test/Makefile
index 895409d4c..7209a022c 100644
--- a/src/libCom/test/Makefile
+++ b/src/libCom/test/Makefile
@@ -12,6 +12,7 @@ TOP=../../..
 include $(TOP)/configure/CONFIG
 
 PROD_LIBS += Com
+Com_DIR = $(INSTALL_LIB)
 
 #epicsListTest_SRCS += epicsListTest.cpp
 PROD_HOST += epicsListTest