diff --git a/Makefile b/Makefile
index a78f53d4c9987324a683675c92ad4c7b03c24c84..e0fe680c39744d7c31c3ef33d56a546b16b880fc 100644
--- a/Makefile
+++ b/Makefile
@@ -328,7 +328,7 @@ TEXIFLAG=$(if $(V),,--quiet)
 	$(call quiet-command,texi2dvi $(TEXIFLAG) -I . $<,"  GEN   $@")
 
 %.html: %.texi
-	$(call quiet-command,$(MAKEINFO) $(MAKEINFOFLAGS) --html $< -o $@, \
+	$(call quiet-command,LC_ALL=C $(MAKEINFO) $(MAKEINFOFLAGS) --html $< -o $@, \
 	"  GEN   $@")
 
 %.info: %.texi