Fix [-Wundef] warning in BCMath extension

diff --git a/ext/bcmath/bcmath.c b/ext/bcmath/bcmath.c
index b7afaf04d32ec40a981988c1d99a6980ff660e37..1b91fba72fe741707d62df2d221d115363c2d5aa 100644 (file)
--- a/ext/bcmath/bcmath.c
+++ b/ext/bcmath/bcmath.c
@@ -20,7 +20,7 @@
 
 #include "php.h"
 
-#if HAVE_BCMATH
+#ifdef HAVE_BCMATH
 
 #include "php_ini.h"
 #include "zend_exceptions.h"