diff --git a/src/plugins/e-acsl/Makefile.in b/src/plugins/e-acsl/Makefile.in
index 414ffd093bc6d97869f12487cdee68c9f7742c6b..c4f3be570ff74190eb1809074aee829c2a2d3a1e 100644
--- a/src/plugins/e-acsl/Makefile.in
+++ b/src/plugins/e-acsl/Makefile.in
@@ -257,9 +257,9 @@ EACSL_CLEANFILES = doc/doxygen/doxygen.cfg \
 	Makefile config.log config.status configure .depend autom4te.cache/* \
 	META.frama-c-e_acsl Makefile.plugin.generated src/local_config.ml top/*
 
-e-acsl-distclean:: clean
+e-acsl-distclean: clean
 	$(PRINT_RM) generated project files
-	$(RM) $(addprefix $(E_ACSL_DIR)/, $(EACSL_CLEANFILES))
+	$(RM) $(wildcard $(addprefix $(E_ACSL_DIR)/, $(EACSL_CLEANFILES)))
 
 ################################
 # Building source distribution #