diff --git a/src/libCom/test/Makefile b/src/libCom/test/Makefile
index 154b2198f..3aa59f121 100644
--- a/src/libCom/test/Makefile
+++ b/src/libCom/test/Makefile
@@ -23,7 +23,7 @@ OBJS_IOC += threadTest
 #fdmgrTest_SRCS += fdmgrTest.c
 #PROD += fdmgrTest
 
-osiTimeTestHost_SRCS += osiTimeTestMain.c osiTimeTest.cc
+osiTimeTestHost_SRCS += osiTimeTestMain.c osiTimeTest.cpp
 PROD += osiTimeTestHost
 OBJS_IOC += osiTimeTest
 
diff --git a/src/libCom/test/osiTimeTest.cc b/src/libCom/test/osiTimeTest.cpp
similarity index 100%
rename from src/libCom/test/osiTimeTest.cc
rename to src/libCom/test/osiTimeTest.cpp