diff --git a/lib/nodes/file.c b/lib/nodes/file.c
index fab8162c9..129619c69 100644
--- a/lib/nodes/file.c
+++ b/lib/nodes/file.c
@@ -79,7 +79,7 @@ int file_parse(struct node *n, json_t *cfg)
 	json_error_t err;
 
 	const char *uri_tmpl = NULL;
-	const char *format = "villas-human";
+	const char *format = "villas.human";
 	const char *eof = NULL;
 	const char *epoch_mode = NULL;
 	double epoch_flt = 0;
diff --git a/lib/nodes/nanomsg.c b/lib/nodes/nanomsg.c
index 67f8dd7f1..04ee08820 100644
--- a/lib/nodes/nanomsg.c
+++ b/lib/nodes/nanomsg.c
@@ -82,7 +82,7 @@ int nanomsg_parse(struct node *n, json_t *cfg)
 	int ret;
 	struct nanomsg *m = (struct nanomsg *) n->_vd;
 
-	const char *format = "villas-human";
+	const char *format = "villas.human";
 
 	json_error_t err;
 
diff --git a/lib/nodes/zeromq.c b/lib/nodes/zeromq.c
index fc81934a2..e01644137 100644
--- a/lib/nodes/zeromq.c
+++ b/lib/nodes/zeromq.c
@@ -99,7 +99,7 @@ int zeromq_parse(struct node *n, json_t *cfg)
 	const char *ep = NULL;
 	const char *type = NULL;
 	const char *filter = NULL;
-	const char *format = "villas-human";
+	const char *format = "villas.human";
 
 	size_t index;
 	json_t *json_pub = NULL;
diff --git a/src/pipe.c b/src/pipe.c
index 75b5d8435..7b41d880e 100644
--- a/src/pipe.c
+++ b/src/pipe.c
@@ -212,7 +212,7 @@ int main(int argc, char *argv[])
 {
 	int ret, level = V, timeout = 0;
 	bool reverse = false;
-	char *format = "villas-human";
+	char *format = "villas.human";
 
 	sendd = recvv = (struct dir) {
 		.enabled = true,