diff --git a/lib/io.c b/lib/io.c
index f53d1b0ec..ed6f018eb 100644
--- a/lib/io.c
+++ b/lib/io.c
@@ -27,7 +27,6 @@
 #include "io_format.h"
 #include "utils.h"
 #include "sample.h"
-#include "plugin.h"
 
 int io_init(struct io *io, struct io_format *fmt, int flags)
 {
@@ -300,14 +299,3 @@ int io_scan(struct io *io, struct sample *smps[], unsigned cnt)
 
 	return ret;
 }
-
-struct io_format * io_format_lookup(const char *name)
-{
-	struct plugin *p;
-
-	p = plugin_lookup(PLUGIN_TYPE_IO, name);
-	if (!p)
-		return NULL;
-
-	return &p->io;
-}
diff --git a/lib/io_format.c b/lib/io_format.c
index e857cfb9f..3ddaf2b4e 100644
--- a/lib/io_format.c
+++ b/lib/io_format.c
@@ -23,6 +23,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 
+#include "plugin.h"
 #include "io_format.h"
 
 int io_format_sscan(struct io_format *fmt, char *buf, size_t len, size_t *rbytes, struct sample *smps[], unsigned cnt, int flags)
@@ -48,3 +49,14 @@ int io_format_fprint(struct io_format *fmt, FILE *f, struct sample *smps[], unsi
 {
 	return fmt->fprint ? fmt->fprint(f, smps, cnt, flags) : -1;
 }
+
+struct io_format * io_format_lookup(const char *name)
+{
+	struct plugin *p;
+
+	p = plugin_lookup(PLUGIN_TYPE_IO, name);
+	if (!p)
+		return NULL;
+
+	return &p->io;
+}