--- webalizer.c
+++ webalizer.c
@@ -28,7 +28,7 @@
 /* Fix broken Zlib 64 bitness */
 #if _FILE_OFFSET_BITS == 64
 #ifndef _LARGEFILE64_SOURCE
-#define _LARGEFILE64_SOURCE = 1
+#define _LARGEFILE64_SOURCE 1
 #endif
 #endif