diff --git a/doc/Makefile b/doc/Makefile
index 0c90b195e..75e5fbdb1 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -93,10 +93,14 @@ doc-all: $(MANPAGES) doc/index.rst
 
 SCHEMAS := $(wildcard doc/schemas/*.json)
 check-fmt-schemas: $(SCHEMAS:%=check-fmt-schema/%)
+fmt-schemas: $(SCHEMAS:%=fmt-schema/%)
 
 check-fmt-schema/%: %
 	@jq . < "$*" > "$*".fmt && diff -u "$*" "$*.fmt" && rm "$*.fmt"
 
+fmt-schema/%: %
+	@jq . < "$*" > "$*".fmt && cat "$*".fmt > "$*" && rm "$*.fmt"
+
 check-doc: check-config-docs check-manpages check-fmt-schemas
 
 # Some manpages use a schema, so need that added.