1 files changed, 2 insertions, 2 deletions

diff --git a/zutil.c b/zutil.c
index 23d2ebe..15add3b 100644
--- a/zutil.c
+++ b/zutil.c
@@ -61,7 +61,7 @@ uLong ZEXPORT zlibCompileFlags()
     case 8:     flags += 2 << 6;        break;
     default:    flags += 3 << 6;
     }
-#ifdef DEBUG
+#ifdef ZLIB_DEBUG
     flags += 1 << 8;
 #endif
 #if defined(ASMV) || defined(ASMINF)
@@ -115,7 +115,7 @@ uLong ZEXPORT zlibCompileFlags()
     return flags;
 }
 
-#ifdef DEBUG
+#ifdef ZLIB_DEBUG
 
 #  ifndef verbose
 #    define verbose 0