diff --git a/pkgs/tools/compression/bsdiff/CVE-2020-14315.patch b/pkgs/tools/compression/bsdiff/CVE-2020-14315.patch
index dabb8deee00a..bb7ff41284eb 100644
--- a/pkgs/tools/compression/bsdiff/CVE-2020-14315.patch
+++ b/pkgs/tools/compression/bsdiff/CVE-2020-14315.patch
@@ -31,7 +31,7 @@ Bug-Debian: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=964796
   * Copyright 2003-2005 Colin Percival
   * All rights reserved
   *
-@@ -24,56 +26,149 @@
+@@ -24,56 +26,148 @@
   * POSSIBILITY OF SUCH DAMAGE.
   */
  
@@ -97,7 +97,7 @@ Bug-Debian: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=964796
 +{
 +	off_t result;
 +
-+#if __GNUC__ >= 5 || \
++#if __GNUC__ >= 5
 +	if (__builtin_add_overflow(a, b, &result))
 +		errx(1, "Corrupt patch");
 +#else