diff --git a/Zend/zend_API.c b/Zend/zend_API.c
index 1e5dfe57b03..ae33bf30220 100644
--- a/Zend/zend_API.c
+++ b/Zend/zend_API.c
@@ -339,7 +339,7 @@ static ZEND_COLD void ZEND_FASTCALL zend_argument_error_variadic(zend_class_entr
 }
 /* }}} */
 
-ZEND_API ZEND_COLD void ZEND_FASTCALL zend_argument_error(zend_class_entry *error_ce, uint32_t arg_num, const char *format, ...) /* {{{ */
+ZEND_API ZEND_COLD void zend_argument_error(zend_class_entry *error_ce, uint32_t arg_num, const char *format, ...) /* {{{ */
 {
 	va_list va;
 
@@ -349,7 +349,7 @@ ZEND_API ZEND_COLD void ZEND_FASTCALL zend_argument_error(zend_class_entry *erro
 }
 /* }}} */
 
-ZEND_API ZEND_COLD void ZEND_FASTCALL zend_argument_type_error(uint32_t arg_num, const char *format, ...) /* {{{ */
+ZEND_API ZEND_COLD void zend_argument_type_error(uint32_t arg_num, const char *format, ...) /* {{{ */
 {
 	va_list va;
 
@@ -359,7 +359,7 @@ ZEND_API ZEND_COLD void ZEND_FASTCALL zend_argument_type_error(uint32_t arg_num,
 }
 /* }}} */
 
-ZEND_API ZEND_COLD void ZEND_FASTCALL zend_argument_value_error(uint32_t arg_num, const char *format, ...) /* {{{ */
+ZEND_API ZEND_COLD void zend_argument_value_error(uint32_t arg_num, const char *format, ...) /* {{{ */
 {
 	va_list va;
 
diff --git a/Zend/zend_API.h b/Zend/zend_API.h
index 6d588cc9007..6f028ae65ee 100644
--- a/Zend/zend_API.h
+++ b/Zend/zend_API.h
@@ -1250,9 +1250,9 @@ ZEND_API ZEND_COLD void ZEND_FASTCALL zend_wrong_parameter_string_or_class_error
 ZEND_API ZEND_COLD void ZEND_FASTCALL zend_wrong_parameter_string_or_class_or_null_error(uint32_t num, const char *name, zval *arg);
 ZEND_API ZEND_COLD void ZEND_FASTCALL zend_wrong_callback_error(uint32_t num, char *error);
 ZEND_API ZEND_COLD void ZEND_FASTCALL zend_unexpected_extra_named_error(void);
-ZEND_API ZEND_COLD void ZEND_FASTCALL zend_argument_error(zend_class_entry *error_ce, uint32_t arg_num, const char *format, ...);
-ZEND_API ZEND_COLD void ZEND_FASTCALL zend_argument_type_error(uint32_t arg_num, const char *format, ...);
-ZEND_API ZEND_COLD void ZEND_FASTCALL zend_argument_value_error(uint32_t arg_num, const char *format, ...);
+ZEND_API ZEND_COLD void zend_argument_error(zend_class_entry *error_ce, uint32_t arg_num, const char *format, ...);
+ZEND_API ZEND_COLD void zend_argument_type_error(uint32_t arg_num, const char *format, ...);
+ZEND_API ZEND_COLD void zend_argument_value_error(uint32_t arg_num, const char *format, ...);
 
 #define ZPP_ERROR_OK                            0
 #define ZPP_ERROR_FAILURE                       1