diff --git a/tools/src/Makefile.in b/tools/src/Makefile.in
index d80aff6ad..e7e5cc2d9 100755
--- a/tools/src/Makefile.in
+++ b/tools/src/Makefile.in
@@ -34,14 +34,17 @@ all: $(exes)
 ck: $(BINDIR)/ck2cti
 
 $(BINDIR)/ck2cti: ck2cti.o $(CONVLIB_DEP) $(CANTERALIB_DEP)
+	$(RM) $(BINDIR)/ck2cti
 	@CXX@ -o $(BINDIR)/ck2cti ck2cti.o $(LCXX_FLAGS) \
                -lconverters -lcantera -ltpx -lctcxx $(LCXX_END_LIBS)
 
 $(BINDIR)/cti2ctml: cti2ctml.o $(CANTERALIB_DEP)
+	$(RM) $(BINDIR)/cti2ctml
 	@CXX@ -o $(BINDIR)/cti2ctml cti2ctml.o $(LCXX_FLAGS) $(LOCAL_LIBS) \
                $(LCXX_END_LIBS)
 
 $(BINDIR)/fixtext: fixtext.o 
+	$(RM) $(BINDIR)/fixtext
 	@CXX@ -o $(BINDIR)/fixtext fixtext.o $(LCXX_FLAGS) \
                $(LCXX_END_LIBS)
 
@@ -50,6 +53,9 @@ $(CONVLIB_DEP):
 
 clean:
 	$(RM) *.o *.*~ $(BINDIR)/cti2ctml $(BINDIR)/ck2cti
+	(if test -d SunWS_cache ; then \
+           $(RM) -rf SunWS_cache ; \
+        fi )
 
 %.d:
 	@CXX@ -MM $(INCDIR) @CXXFLAGS@ $(CXX_FLAGS) $*.cpp > $*.d