diff --git a/ext/bcmath/libbcmath/src/bcmath.h b/ext/bcmath/libbcmath/src/bcmath.h
index 75a17604f379..07dd84ff90d1 100644
--- a/ext/bcmath/libbcmath/src/bcmath.h
+++ b/ext/bcmath/libbcmath/src/bcmath.h
@@ -75,7 +75,7 @@ typedef struct bc_struct {
 #define MIN(a, b)      ((a)>(b)?(b):(a))
 
 #ifndef LONG_MAX
-#define LONG_MAX 0x7ffffff
+#define LONG_MAX 0x7fffffff
 #endif