diff --git a/Zend/zend_hash.c b/Zend/zend_hash.c
index d010dff3603..2347f99432e 100644
--- a/Zend/zend_hash.c
+++ b/Zend/zend_hash.c
@@ -100,7 +100,7 @@ static uint32_t zend_always_inline zend_hash_check_size(uint32_t nSize)
 	if (nSize < HT_MIN_SIZE) {
 		nSize = HT_MIN_SIZE;
 	} else if (UNEXPECTED(nSize >= HT_MAX_SIZE)) {
-		zend_error_noreturn(E_ERROR, "Array size is too big", nSize);
+		zend_error_noreturn(E_ERROR, "Possible integer overflow in memory allocation (%zu * %zu + %zu)", nSize, sizeof(Bucket), sizeof(Bucket));
 	}
 
 #if defined(ZEND_WIN32)