Index: libproxy-0.4.0/libproxy/CMakeLists.txt
===================================================================
--- libproxy-0.4.0.orig/libproxy/CMakeLists.txt
+++ libproxy-0.4.0/libproxy/CMakeLists.txt
@@ -137,7 +137,7 @@ message("")
 
 ### Misc files
 # PkgConfig file
-if(NOT ${WIN32})
+if(NOT WIN32)
   configure_file(libproxy-1.0.pc.in libproxy-1.0.pc @ONLY)
   install(FILES libproxy-1.0.pc DESTINATION ${libdir}/pkgconfig)
 endif()