diff --git a/modules/juce_core/zip/juce_GZIPDecompressorInputStream.cpp b/modules/juce_core/zip/juce_GZIPDecompressorInputStream.cpp
index 24d2a2dc14..c8a0e4d8f5 100644
--- a/modules/juce_core/zip/juce_GZIPDecompressorInputStream.cpp
+++ b/modules/juce_core/zip/juce_GZIPDecompressorInputStream.cpp
@@ -74,6 +74,7 @@ namespace zlibNamespace
   #undef DO1
   #undef DO8
   #include "zlib/crc32.c"
+  #undef N
   #include "zlib/deflate.c"
   #include "zlib/inffast.c"
   #undef PULLBYTE