diff --git a/src/lib/Makefile b/src/lib/Makefile
index 6516928508ebc94dc17e163da65633ef3ef335d6..856f72e602c7d06826a4d6a3362350910fa4ff90 100644
--- a/src/lib/Makefile
+++ b/src/lib/Makefile
@@ -155,7 +155,7 @@ lib-shared: $(PLUMED_KERNEL) $(PLUMED_SHARED_OBJ) $(PLUMED_MAIN_SHARED) $(PLUMED
 
 $(PLUMED_SCRIPTS_EXE):
 	@echo "#! /bin/bash" > $@
-	@echo "echo 'NOTE: shell only version, useful when plumed is cross compiled'" >> $@
+	@echo "echo 'NOTE: shell only version, useful when plumed is cross compiled' >&2" >> $@
 	@echo "export PLUMED_ROOT=\"$(realpath $(PLUMED_LIBDIR)../../)\"" >> $@
 	@echo "source \"\$$PLUMED_ROOT\"/scripts/$(subst plumed-,,$(@F)).sh" >> $@
 	chmod a+x $@