diff --git a/libisofs/ecma119.c b/libisofs/ecma119.c
index 0a57317..e790506 100644
--- a/libisofs/ecma119.c
+++ b/libisofs/ecma119.c
@@ -927,7 +927,7 @@ int ecma119_image_new(IsoImage *src, IsoWriteOpts *opts, Ecma119Image **img)
     target->eltorito = (src->bootcat == NULL ? 0 : 1);
     target->catalog = src->bootcat;
 
-#ifdef Libisofs_setlocale_in_iniT
+#ifndef Libisofs_setlocale_in_iniT
     /* default to locale charset */
     /* ??? ts Nov 25 2008 :
        Shouldn't this go to library initialization or even to app ?
diff --git a/libisofs/fs_image.c b/libisofs/fs_image.c
index 45fbe26..8fe89d5 100644
--- a/libisofs/fs_image.c
+++ b/libisofs/fs_image.c
@@ -2216,7 +2216,7 @@ int iso_image_filesystem_new(IsoDataSource *src, struct iso_read_opts *opts,
     data->aaip_load = !opts->noaaip;
     data->aaip_version = -1;
 
-#ifdef Libisofs_setlocale_in_iniT
+#ifndef Libisofs_setlocale_in_iniT
     /* ??? ts Nov 25 2008 :
        Shouldn't this go to library initialization or even to app ?
     */
diff --git a/libisofs/util.c b/libisofs/util.c
index 0f9b12a..0711266 100644
--- a/libisofs/util.c
+++ b/libisofs/util.c
@@ -1585,7 +1585,7 @@ char *ucs2str(const char *buf, size_t len)
 
     /* convert to local charset */
 
-#ifdef Libisofs_setlocale_in_iniT
+#ifndef Libisofs_setlocale_in_iniT
     /* ??? ts Nov 25 2008 :
        Shouldn't this go to library initialization or even to app ?
     */