diff --git a/debian/patches/0001-build.patch b/debian/patches/0001-build.patch
index 702c74b..7a358f3 100644
--- a/debian/patches/0001-build.patch
+++ b/debian/patches/0001-build.patch
@@ -7,7 +7,7 @@ diff -Naurp lzlib.orig/configure lzlib/configure
 @@ -28,9 +28,9 @@ infodir='$(datarootdir)/info'
  libdir='$(exec_prefix)/lib'
  mandir='$(datarootdir)/man'
- CC=
+ CC=gcc
 -CPPFLAGS=
 -CFLAGS='-Wall -W -O2'
 -LDFLAGS=
@@ -15,5 +15,5 @@ diff -Naurp lzlib.orig/configure lzlib/configure
 +#CFLAGS='-Wall -W -O2'
 +#LDFLAGS=
  
- # Loop over all args
- while [ -n "$1" ] ; do
+ # checking whether we are using GNU C.
+ if [ ! -x /bin/gcc ] &&