diff --git a/pack/pack.go b/pack/pack.go
index 4bccb5db..9fd28be6 100644
--- a/pack/pack.go
+++ b/pack/pack.go
@@ -229,7 +229,7 @@ func encryptEPUBResource(compressor *flate.Writer, compress bool, encrypter cryp
 	data.KeyInfo.RetrievalMethod.URI = "license.lcpl#/encryption/content_key"
 	data.KeyInfo.RetrievalMethod.Type = "http://readium.org/2014/01/lcp#EncryptedContentKey"
 
-	// espace the path before using it as a uri
+	// escape the path before using it as a uri
 	data.CipherData.CipherReference.URI = xmlenc.URI(xmlenc.ResourcePathEscape(file.Path))
 
 	// declare to the reading software that the content is compressed before encryption