diff --git a/src/misc/Makefile b/src/misc/Makefile
index f7cfa44e8..3d7bc5168 100644
--- a/src/misc/Makefile
+++ b/src/misc/Makefile
@@ -35,7 +35,7 @@ miscIoc_LIBS  = rsrvIoc asIoc dbtoolsIoc dbIoc registryIoc dbStaticIoc ca Com
 # For R3.13 compatibility only
 ifeq ($(strip $(COMPAT_313)),YES)
 OBJLIB_vxWorks=miscIoc
-OBJLIB_SRCS = $(LIBSRCS)
+OBJLIB_SRCS = $(LIB_SRCS)
 endif
 
 include $(TOP)/configure/RULES
diff --git a/src/rsrv/Makefile b/src/rsrv/Makefile
index d39eab43f..e420ba848 100644
--- a/src/rsrv/Makefile
+++ b/src/rsrv/Makefile
@@ -33,7 +33,7 @@ rsrvIoc_RCS = rsrvIoc.rc
 # For R3.13 compatibility only
 ifeq ($(strip $(COMPAT_313)),YES)
 OBJLIB_vxWorks=rsrvIoc
-OBJLIB_SRCS = $(LIBSRCS)
+OBJLIB_SRCS = $(LIB_SRCS)
 endif
 
 include $(TOP)/configure/RULES