diff --git a/Source/build.cpp b/Source/build.cpp
index 5088f534..a540ebb3 100644
--- a/Source/build.cpp
+++ b/Source/build.cpp
@@ -75,8 +75,8 @@ CEXEBuild::CEXEBuild()
 #ifdef NSIS_CONFIG_COMPRESSION_SUPPORT
   definedlist.add("NSIS_CONFIG_COMPRESSION_SUPPORT");
 #endif
-#ifdef NSIS_ZLIP_COMPRESS_WHOLE
-  definedlist.add("NSIS_ZLIP_COMPRESS_WHOLE");
+#ifdef NSIS_ZLIB_COMPRESS_WHOLE
+  definedlist.add("NSIS_ZLIB_COMPRESS_WHOLE");
 #endif
 #ifdef NSIS_BZIP2_COMPRESS_WHOLE
   definedlist.add("NSIS_BZIP2_COMPRESS_WHOLE");