diff --git a/mingw-w64-crt/lib32/kernel32.def b/mingw-w64-crt/lib32/kernel32.def
index 7443417..8d5fad7 100644
--- a/mingw-w64-crt/lib32/kernel32.def
+++ b/mingw-w64-crt/lib32/kernel32.def
@@ -1553,7 +1553,7 @@
 InitializeCriticalSectionEx@12
 InitializeProcThreadAttributeList@16
 InitializeSRWLock@4
-InterlockedPushListSList@8
+@InterlockedPushListSList@16 ; really fastcall calling convention
 IsCalendarLeapDay@20
 IsCalendarLeapMonth@16
 IsCalendarLeapYear@12