diff --git a/reactos/ntoskrnl/mm/ARM3/mdlsup.c b/reactos/ntoskrnl/mm/ARM3/mdlsup.c
index b3449a366dc..f956bb7725d 100644
--- a/reactos/ntoskrnl/mm/ARM3/mdlsup.c
+++ b/reactos/ntoskrnl/mm/ARM3/mdlsup.c
@@ -271,7 +271,7 @@ MmFreePagesFromMdl(IN PMDL Mdl)
         //
         Pfn1->u3.e1.StartOfAllocation = 0;
         Pfn1->u3.e1.EndOfAllocation = 0;
-        Pfn1->u2.ShareCount == 0;
+        Pfn1->u2.ShareCount = 0;
         
         //
         // Dereference it