Index: Makefile.in
===================================================================
diff -u -r35c67391973a07983d0b0dfe70706e6a69fbdbfc -r6821564a411db17e6c9c781910346e74591da6e5
--- Makefile.in	(.../Makefile.in)	(revision 35c67391973a07983d0b0dfe70706e6a69fbdbfc)
+++ Makefile.in	(.../Makefile.in)	(revision 6821564a411db17e6c9c781910346e74591da6e5)
@@ -344,7 +344,7 @@
 
 #TESTFLAGS = -srcdir $(srcdir)
 test-core: $(TCLSH_PROG)
-	$(TCLSH) $(src_test_dir_native)/object-system.xotcl -libdir $(PLATFORM_DIR) $(TESTFLAGS)
+	$(TCLSH) $(src_test_dir_native)/object-system.tcl -libdir $(PLATFORM_DIR) $(TESTFLAGS)
 	$(TCLSH) $(src_test_dir_native)/destroytest.tcl -libdir $(PLATFORM_DIR) $(TESTFLAGS)
 	$(TCLSH) $(src_test_dir_native)/method-modifiers.tcl -libdir $(PLATFORM_DIR) $(TESTFLAGS)
 	$(TCLSH) $(src_test_dir_native)/var-access.tcl -libdir $(PLATFORM_DIR) $(TESTFLAGS)
@@ -358,7 +358,7 @@
 	$(TCLSH) $(src_test_dir_native)/testo.xotcl -libdir $(PLATFORM_DIR) $(TESTFLAGS)
 	$(TCLSH) $(src_test_dir_native)/speedtest.xotcl -libdir $(PLATFORM_DIR) $(TESTFLAGS)
 	$(TCLSH) $(src_test_dir_native)/forwardtest.xotcl -libdir $(PLATFORM_DIR) $(TESTFLAGS)
-	$(TCLSH) $(src_test_dir_native)/mixinoftest.xotcl -libdir $(PLATFORM_DIR) $(TESTFLAGS)
+	$(TCLSH) $(src_test_dir_native)/mixinoftest.tcl -libdir $(PLATFORM_DIR) $(TESTFLAGS)
 	$(TCLSH) $(src_test_dir_native)/slottest.xotcl -libdir $(PLATFORM_DIR) $(TESTFLAGS)