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-rw-r--r--Src/exec.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Src/exec.c b/Src/exec.c
index baabf1b87..1cfe97373 100644
--- a/Src/exec.c
+++ b/Src/exec.c
@@ -529,7 +529,7 @@ execute(LinkList args, int flags, int defpath)
 	 * for ARGV0: that's OK since we're about to exec or exit
 	 * on failure.
 	 */
-#ifdef HAVE_UNSETENV
+#ifdef USE_SET_UNSET_ENV
 	unsetenv("ARGV0");
 #else
 	delenvvalue(z - 6);