diff --git a/configure.ac b/configure.ac
index f0f9723..9e79db9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -55,7 +55,7 @@ AC_DEFINE_UNQUOTED([LIB_VERSION_REVISION],
   [Library revision])
 
 AM_CPPFLAGS="-I\$(top_srcdir)/include"
-AM_CFLAGS="-Wall -Wno-parentheses"
+AM_CFLAGS="-Wall"
 AM_CXXFLAGS="$AM_CFLAGS"
 AC_SUBST([AM_CPPFLAGS])
 AC_SUBST([AM_CFLAGS])
diff --git a/zbar/processor.h b/zbar/processor.h
index a8289e0..8a7e33c 100644
--- a/zbar/processor.h
+++ b/zbar/processor.h
@@ -29,7 +29,9 @@
 #endif
 #include <stdlib.h>
 #include <string.h>
+#ifndef WIN32
 #include <unistd.h>
+#endif
 
 #include <zbar.h>
 #include "error.h"