diff --git a/Zend/zend_compile.h b/Zend/zend_compile.h
index b1fd19f8e36..393e6dc7af8 100644
--- a/Zend/zend_compile.h
+++ b/Zend/zend_compile.h
@@ -104,7 +104,7 @@ typedef struct _zend_try_catch_element {
 #define ZEND_ACC_FINAL			0x04
 #define ZEND_ACC_INTERFACE		0x08
 /* ZEND_ACC_ABSTRACT is used for abstract classes and methods. Abstract checks work only on this flag. */
-/* ZEND_ACC_ABSTRACT_CLASS denotes that a class was explicitly defined as abstract be using the keyword. */
+/* ZEND_ACC_ABSTRACT_CLASS denotes that a class was explicitly defined as abstract by using the keyword. */
 #define ZEND_ACC_ABSTRACT_CLASS	0x10
 #define ZEND_ACC_FINAL_CLASS	0x20
 #define ZEND_ACC_IMPLEMENTED_ABSTRACT	0x40