diff --git a/lib/graphics.js b/lib/graphics.js
index 83c4cd3..f52a5e5 100644
--- a/lib/graphics.js
+++ b/lib/graphics.js
@@ -153,7 +153,7 @@ function graphics(callback) {
           model: item.sppci_model || '',
           bus,
           vramDynamic: bus === 'Built-In',
-          vram: vram || vramDyn || 0,
+          vram: vram || vramDyn || null,
           deviceId: item['spdisplays_device-id'] || '',
           vendorId: item['spdisplays_vendor-id'] || vendorToId((item['spdisplays_vendor'] || '') + (item.sppci_model || '')),
           external: (item.sppci_device_type === 'spdisplays_egpu'),
@@ -179,7 +179,7 @@ function graphics(callback) {
               displayId: displayItem['_spdisplays_displayID'] || null,
               main: displayItem['spdisplays_main'] ? displayItem['spdisplays_main'] === 'spdisplays_yes' : false,
               builtin: (displayItem['spdisplays_display_type'] || '').indexOf('built-in') > -1,
-              connection: ((connectionType.indexOf('_internal') > -1) ? 'Internal' : ((connectionType.indexOf('_displayport') > -1) ? 'Display Port' : ((connectionType.indexOf('_hdmi') > -1) ? 'HDMI' : ''))),
+              connection: ((connectionType.indexOf('_internal') > -1) ? 'Internal' : ((connectionType.indexOf('_displayport') > -1) ? 'Display Port' : ((connectionType.indexOf('_hdmi') > -1) ? 'HDMI' : null))),
               sizeX: null,
               sizeY: null,
               pixelDepth: (pixelDepthString === 'CGSThirtyBitColor' ? 30 : (pixelDepthString === 'CGSThirtytwoBitColor' ? 32 : (pixelDepthString === 'CGSTwentyfourBitColor' ? 24 : ''))),