diff --git a/debian/patches/debian/0001-build.patch b/debian/patches/debian/0001-build.patch
index 9143ddf..fa83fa9 100644
--- a/debian/patches/debian/0001-build.patch
+++ b/debian/patches/debian/0001-build.patch
@@ -16,4 +16,4 @@ diff -Naurp lzd.orig/configure lzd/configure
 +#LDFLAGS=
  
  # checking whether we are using GNU C++.
- if /bin/sh -c "${CXX} --version" > /dev/null 2>&1 ; then true
+ /bin/sh -c "${CXX} --version" > /dev/null 2>&1 ||