diff --git a/plugins/dell/fu-dell-common.c b/plugins/dell/fu-dell-common.c
index c153fc0f2..66d6932e1 100644
--- a/plugins/dell/fu-dell-common.c
+++ b/plugins/dell/fu-dell-common.c
@@ -58,24 +58,6 @@ _dell_smi_obj_free (FuDellSmiObj *obj)
 
 G_DEFINE_AUTOPTR_CLEANUP_FUNC (FuDellSmiObj, _dell_smi_obj_free);
 
-gboolean
-fu_dell_supported (FuPlugin *plugin)
-{
-	GBytes *de_table = NULL;
-	const guint8 *value;
-	gsize len;
-
-	de_table = fu_plugin_get_smbios_data (plugin, 0xDE);
-	if (de_table == NULL)
-		return FALSE;
-	value = g_bytes_get_data (de_table, &len);
-	if (len == 0)
-		return FALSE;
-	if (*value != 0xDE)
-		return FALSE;
-	return TRUE;
-}
-
 /* don't actually clear if we're testing */
 gboolean
 fu_dell_clear_smi (FuDellSmiObj *obj)
@@ -90,7 +72,6 @@ fu_dell_clear_smi (FuDellSmiObj *obj)
 	return TRUE;
 }
 
-
 gboolean
 fu_dell_execute_smi (FuDellSmiObj *obj)
 {
diff --git a/plugins/dell/fu-dell-common.h b/plugins/dell/fu-dell-common.h
index 4b9c261ae..dae37fe7d 100644
--- a/plugins/dell/fu-dell-common.h
+++ b/plugins/dell/fu-dell-common.h
@@ -22,7 +22,6 @@
 #ifndef __FU_DELL_COMMON_H
 #define __FU_DELL_COMMON_H
 
-#include "fu-plugin.h"
 #include "fu-device.h"
 #include <smbios_c/smi.h>
 #include <smbios_c/obj/smi.h>
@@ -87,9 +86,6 @@ typedef enum _CABLE_TYPE
 	CABLE_TYPE_TBT
 } CABLE_TYPE;
 
-gboolean
-fu_dell_supported (FuPlugin *plugin);
-
 gboolean
 fu_dell_clear_smi (FuDellSmiObj *obj);
 
diff --git a/plugins/dell/fu-plugin-dell.c b/plugins/dell/fu-plugin-dell.c
index b77c54007..0b38eed83 100644
--- a/plugins/dell/fu-plugin-dell.c
+++ b/plugins/dell/fu-plugin-dell.c
@@ -111,6 +111,24 @@ _fwup_resource_iter_free (fwup_resource_iter *iter)
 
 G_DEFINE_AUTOPTR_CLEANUP_FUNC (fwup_resource_iter, _fwup_resource_iter_free);
 
+static gboolean
+fu_dell_supported (FuPlugin *plugin)
+{
+	GBytes *de_table = NULL;
+	const guint8 *value;
+	gsize len;
+
+	de_table = fu_plugin_get_smbios_data (plugin, 0xDE);
+	if (de_table == NULL)
+		return FALSE;
+	value = g_bytes_get_data (de_table, &len);
+	if (len == 0)
+		return FALSE;
+	if (*value != 0xDE)
+		return FALSE;
+	return TRUE;
+}
+
 static gboolean
 fu_plugin_dell_match_dock_component (const gchar *query_str,
 				     efi_guid_t *guid_out,