diff --git a/src/ssn/verify/verifyPatch.ts b/src/ssn/verify/verifyPatch.ts
index e8d82a2..af4900a 100644
--- a/src/ssn/verify/verifyPatch.ts
+++ b/src/ssn/verify/verifyPatch.ts
@@ -15,7 +15,7 @@ export default function verifyPatch(fileEntries: ISsnFileEntry[], product: Produ
   const validLastFileAlternate = `Assets/${product}_version.txt`;
   if (lastFile.name === validLastFileName) {
     if (lastFile.diffType !== SsnDiffType.NewFile) {
-      throw new Error(`Last file (.version file) must have diffType 0but it had diffType ${lastFile.diffType}.`);
+      throw new Error(`Last file (.version file) must have diffType 0 but it had diffType ${lastFile.diffType}.`);
     }
   } else if (lastFile.name === validLastFileAlternate) {
     //In some early patches, the last file is *_version.txt and the second to last is *.version