diff --git a/Makefile b/Makefile
index cf0c8b87..53e38b5b 100644
--- a/Makefile
+++ b/Makefile
@@ -1438,6 +1438,7 @@ D_FILES += $(LIB_C_FILES:%.c=%.d)
 all: $(LIB) $(TESTS) $(TEST_NETWORK_CONFIG) $(NET_TESTS)
 
 $(LIB): $(LIB_GEN_FILES) $(LIB_O_FILES)
+	rm -f $@
 	$(AR) rcu $@ $^
 
 run_tests: $(RUN_TESTS)
diff --git a/freebsd-to-rtems.py b/freebsd-to-rtems.py
index 394a621a..c77a534a 100755
--- a/freebsd-to-rtems.py
+++ b/freebsd-to-rtems.py
@@ -478,6 +478,7 @@ class ModuleManager:
 			'all: $(LIB) $(TESTS) $(TEST_NETWORK_CONFIG) $(NET_TESTS)\n' \
 			'\n' \
 			'$(LIB): $(LIB_GEN_FILES) $(LIB_O_FILES)\n' \
+			'\trm -f $@\n' \
 			'\t$(AR) rcu $@ $^\n' \
 			'\n' \
 			'run_tests: $(RUN_TESTS)\n' \