diff --git a/putty.spec b/putty.spec
index f8eb318..fdc6ae4 100644
--- a/putty.spec
+++ b/putty.spec
@@ -41,9 +41,6 @@ for the SSH, Telnet, rlogin, and raw TCP computing protocols and as a
 serial console client.
 
 %prep
-# Copied S2 to S3 because the validator(s) want a known extension like .sig or
-# .asc. Now ensure that they are still the same, or else fail the build.
-cmp "%{SOURCE2}" "%{SOURCE3}"
 %setup -q
 %patch -P 1 -P 2 -P 3 -p1