diff --git a/include/villas/node.h b/include/villas/node.h
index 2c65558d9..da40ff188 100644
--- a/include/villas/node.h
+++ b/include/villas/node.h
@@ -161,11 +161,6 @@ int node_write(struct node *n, struct sample *smps[], unsigned cnt, unsigned *re
 int node_fd(struct node *n);
 
 struct node_type * node_type(struct node *n);
-{
-	assert(n->type == STATE_INITIALIZED);
-
-	return n->_vt;
-}
 
 struct memory_type * node_memory_type(struct node *n, struct memory_type *parent);
 
diff --git a/lib/node.c b/lib/node.c
index 80df9502c..460a966be 100644
--- a/lib/node.c
+++ b/lib/node.c
@@ -554,6 +554,13 @@ int node_fd(struct node *n)
 	return node_type(n)->fd ? node_type(n)->fd(n) : -1;
 }
 
+struct node_type * node_type(struct node *n)
+{
+	assert(n->state == STATE_INITIALIZED);
+
+	return n->_vt;
+}
+
 struct memory_type * node_memory_type(struct node *n, struct memory_type *parent)
 {
 	return node_type(n)->memory_type ? node_type(n)->memory_type(n, parent) : &memory_hugepage;