diff --git a/packages/gatsby-plugin-sharp/src/plugin-options.js b/packages/gatsby-plugin-sharp/src/plugin-options.js
index f004dd11611e2..b3a5bab3bcaf5 100644
--- a/packages/gatsby-plugin-sharp/src/plugin-options.js
+++ b/packages/gatsby-plugin-sharp/src/plugin-options.js
@@ -58,7 +58,7 @@ exports.createTransformObject = args => {
     jpegProgressive: args.jpegProgressive || generalArgs.jpegProgressive,
     grayscale: args.grayscale || generalArgs.grayscale,
     rotate: args.rotate,
-    trim: !!args.trim,
+    trim: args.trim ? args.trim : undefined,
     duotone: args.duotone ? args.duotone : null,
     fit: args.fit,
     background: args.background,